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Transmission & Drivetrain

An Overdrive Transmission Is Awesome, Just Misunderstood

When the automatic transmission first appeared on the market in the 1920s, anyone could count the number of gears on just one hand. But today, transmissions are practically all over the place. Honda is currently developing triple-clutch transmissions with 11 gears. According to industry experts, there was a time when transmissions only existed because automotive engines were below par. For instance, V-8 engines can rev up to 6,000 revolutions per minute.

Without a transmission, you will require a car engine that could spin at least three times that high to arrive at top highway speeds. As you may already know, the primary function of a transmission is to take an engine’s RPM and produce the wheel RPM that a particular situation requires. At low gear, the vehicle can pull away from a dead stop, while mid-range gears give rise to acceleration to freeway speeds. High gears ensure the momentum is maintained. This article discusses the misunderstood overdrive transmission and why it was created.

What’s an Overdrive Transmission?

Overdrive refers to a transmission gearing that significantly lowers an engine’s RPM at specific times to bring forth several beneficial effects. In other words, an overdrive turns the driveshaft faster than the engine’s crankshaft as soon as the overdrive is engaged. To get underway, the crankshaft has to turn faster than the driveshaft, which is underdriven. This action gives the engine a significant mechanical advantage over the driveshaft. However, as soon as the vehicle reaches cruising speed, the overdrive ensures the engine turns at a lower RPM than the driveshaft.

This yields better fuel mileage while reducing engine wear. Manual and automatic transmissions may have overdrive, though today’s manuals stipulate that drivers must depress the clutch and then shift into overdrive physically. But from the beginning, this was not always the case. Overdrive‘ is a word that relates to the gear ratio that constitutes ‘extra’ on top of the gearing that generates the peak amount of power. This means the gearing is ‘overdriven.’ Overdrive is practically in every transmission today.

What’s the Primary Function of Overdrive?

The primary function of overdrive has to do with fuel efficiency. A vehicle’s efficiency improves significantly if it moves faster while relaxing its engine. Moreover, since the engine’s workload is considerably reduced, the vehicle’s ride comfort improves and consequently becomes less noisy. The lesser the stress on your car engine, the less stress you will experience. This also boosts your vehicle’s reliability and longevity.

How an Overdrive System Works

When a vehicle is in overdrive, the gearing ensures that the input shaft rotates slower than the output shaft as the car overdrives beyond its peak power point. In a manual transmission, the car is put into top gear – i.e., overdrive – using the stick shifter and the clutch. But in an automatic vehicle, the automobile shifts itself ‘automatically’ into overdrive. 

The Overdrive Transmissions You Need to Know

There is no better time than this period to meet some of the various overdrive transmissions, arranged in no specific order.

General Motors TH200-4R

The TH200-4R transmission first came on the market in mid-sized sedans from General Motors manufactured in 1981. It had a dual-bolt-pattern bell housing, allowing it to fit excellently behind a Monte Carlo SS small-block V-8 and a Grand National’s Buick V-6. The TH200-4R can also be built to efficiently handle big-block power such as Olds, Cadillac, big Buick, big-block Chevy, etc. It was manufactured from 1981 to 1988 and came with an OE rating of 300 horsepower. The dual bolt pattern of the TH200-4R allows it to fit correctly behind most rear-drive GM V-6s or V-8s. No computer is required to operate this transmission, and its overall length is practically the same as that of the TH350. However, you may have to replace most of its internals to handle massive power conveniently.

General Motors 4L80-E

The 4L80-E is a heavy-duty transmission built on TH400 internals and was the standard equipment on 1-ton and ¾ pickups. It was manufactured from 1993 to 2005 and came with an OE rating of 450 horsepower. The 4L80-E can handle massive amounts of power, and its proven strong internals made it popular with the aftermarket. However, some of its weaknesses include its need for computer control. In addition, the transmission’s input shaft can also break easily.

Ford AOD

The Ford AOD transmission, manufactured from 1980 to 1993, was the first production 4-speed overdrive automatic transmission by a renowned domestic manufacturer. This remarkable transmission was constructed more or less around the FMX three-speed. The OE rating of this lightweight and simple transmission is 250 to 300 horsepower. The AOD’s compact design and strong aftermarket support made it incredibly popular. However, this transmission built a reputation for a soft, lazy shift, and its concentric input shaft torque converter lock-up design left a little to be desired.

General Motors TH700-R4/4L60-E

The TH700-R4/4L60-E transmission is the updated version of the 4L60-E and has the internals of a TH350. It was Chevrolet’s backbone 4-speed automatic over the last 20 years and came in light trucks, passenger cars, etc. The TH700-R4 was manufactured from 1982 to 2005 with an OE rating of approximately 350 horsepower. It can be rebuilt with 4L65-E specs and doesn’t require computer control. A significant weakness of the TH700-R4 is the big RPM drop between the first and second gears. Another notable weakness is the sun-reaction shell that tends to break at the input shaft splines.

Ford AOD-E/4R70-W

Ford updated the AOD transmission in the early 1990s by adding electronic shift control and enhancing its strength. The transmission was equipped with a brand-new, wide-ratio gearset and was eventually renamed ‘4R70W.’ The 4R70W transmission is designed to handle lots of abuse and was manufactured from 1992 to 2005. Its 2-inch-wide overdrive band guarantees better holding power, and its stronger input shaft is admirable. In addition, the transmission’s wide-ratio gearset matches shifts excellently to the engine powerband. Nevertheless, the 4R70W is not without a significant weakness: it requires a computer to operate.

Conclusion

The overdrive transmission is understandably one of the most misunderstood components of a vehicle. But it is one of the most vital vehicle parts that enhances the longevity and reliability of any vehicle.

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Transmission & Drivetrain

Qualities of a Bulletproof 4R100 Transmission

The first electronically-controlled transmission from Ford was introduced in 1989 and named the E4OD (E = electronically controlled; 4 = Forward Gears; OD = OverDrive). The E4OD was established on core components of the C6 heavy-duty automatic transmission and was used extensively in several heavy-duty and light vehicles, including the F-150, F-350, F250, and the Bronco. The E4OD came with multiple bolt patterns, which made it incredibly popular for an upgrade or swap. These include big blocks (385 series, not FE), small blocks, modular bolts, and diesel patterns. The 4R100 transmission is rated at 1,000 ft./lbs, which means it is one of the strongest or toughest transmissions ever. Although this is a heavy-duty transmission, the addition of modifications by the owners became one of the weak aspects of the drivetrain.

An Overview of the 4R100 Transmission

The E4OD was updated to the contemporary 4R100 transmission, which is the last rendition of the C6. The 4R100 shares excellent similarities to the E4OD; however, several internal components were adjusted here and there to tackle every durability concern many truck drivers/owners raised. Some issues became visible when this transmission was placed behind the Powerstroke Diesel Engine.

Then, in 1999, 4R100 was enhanced with a PTO (power take-off), which enabled auxiliary equipment to attach readily to heavy-duty vehicles with the transmission. This was when the E4OD was renamed the ‘4R100’ automatic transmission. The 4R100 is a four-speed, heavy-duty automatic transmission that rear-wheel drive trucks with 7.3-liter diesel engine use. It phased out only when the 2003 model – i.e., the 5R110W – dropped. Trucks that carry heavy loads can depend reliably on the 4R100 transmission. The 4R100 and E4OD transmissions share identical gear ratios:

  • 1st gear = 2.71 (excellent for trucks that tow heavy loads)
  • 2nd gear = 1.54
  • 3rd gear = 1:1 ratio
  • 4th = 0.71.

The 4R100 is also a computer-controlled transmission that allows users to use hand-held controllers to modify the characteristics or attributes of the automatic transmission. The 4R100 transmission weighs precisely 270lbs. (dry with converter), and every internal component is enclosed in an aluminum case. It has a fluid capacity of 18 quarts Mercon V (complete with torque converter).

Using a hand-held tuner, the owner/user readily adjusts the line pressure, the firmness of the shifts, and the RPM at which the transmission shifts. Of course, truck owners want all shifts to be as seamless as possible. You can even throw beefier tires on your heavy-duty vehicles and readily adjust your transmission settings to account for the larger diameters of these tires.

The 4R100 – and E4OD – were massive automatic transmissions measuring 27.25 inches long. This is why both automatic transmissions do not apply to non-Ford vans and trucks. In addition, shoehorning the 4R100 into another vehicle will require extensive and expensive modifications. This is why Ford matched the transmission to the following engines:

  • ’99 to ’03 Ford Expedition SUV comes with the 5.4-liter V-8
  • ’99 to ’04 Ford E-Series vans
  • ’99 to ’03 Ford Excursion
  • ’99 to ’03 Ford F-250, larger Super Duty trucks, etc.

Although the 4R100 and E4OD automatic transmissions have identical exteriors, not every component is interchangeable between these unique units. This is why extra care must be exercised or taken to ensure comprehensive compatibility. Moreover, unlike its predecessor, the 4R100 is equipped with a dedicated output shaft speed sensor planted at the rear end of the transmission. In addition, a pulse-width modulated (PWM) torque converter clutch solenoid was also included in the entire 4R100s in every diesel application and eventually in all 4R100 automatic transmissions.

4R100 Automatic Transmission Upgrades

Although the hand-held tuner offers users several basic adjustments your heavy-duty vehicle needs, some truck owners are not opposed to having additional options. The following accessories are some of the few that can help strengthen your 4R100 transmission:

Shift Improver Kits

Shift improver kits are primarily designed to provide users with up to 3 unique options for adjusting their transmission. You can readily adjust or adapt the tranny for towing capabilities, off-road adventures, and heavy-duty conditions.

Lockup Valve Kits

You should opt for lockup valve kits if you want to prolong the life of the torque converter.

Clutch Disks or Kevlar Bands

Consider clutch disks or Kevlar bands if your primary goal is for your transmission to perform optimally under heavy-duty conditions.

Inline Oil Filter

Consider adding an inline oil filter as it ensures the entry of zero debris into the transmission lines or cooler in case you experience sudden and total tranny failure.

Addition of Extra Capacity

You can help keep the transmission cool or at the optimal temperature by adding extra capacity to it with a steel or aluminum deep transmission pan.

Minimize Transmission Temperature

Use an aftermarket transmission cooler with a built-in electric fan to minimize the transmission’s temperature or keep it as low as possible.

Customize Your Ride

You can customize your ride with hardened pump drive tubes, heavy-duty stall converters, and anti-balloon plates.

Transmission Temperature Gauge

This accessory helps you track the overall temperature of the tranny itself. For example, it alerts you when the temperature is climbing near the maximum 200-degree Celsius mark.

Common Issues Plaguing 4R100 Transmissions

Some of the most common problems 4R100 transmissions experience include delayed gear engagement, a hard shift, especially in lower gears, and stalling the vehicle when shifted into the reverse gear. The reverse input drum often wears out untimely, causing your vehicle to stall in reverse since the transmission cannot correctly engage the gear. Therefore, each time you experience these or any other problems with your 4R100 transmission, ensure a qualified mechanic looks it over for quick and inexpensive repairs.

The Bottom Line

The Ford 4R100 is one of the most reliable, heavy-duty 4-speed automatic transmissions on the market and is used extensively in rear-wheel drive trucks with 7.3-liter diesel engines. It was introduced in 1999 as a successor to the famed E4OD transmission. It could conveniently handle higher torque ratings, solved several electronic issues that plagued its predecessor, the E4OD, and was more durable. Indeed, the 4R100 automatic transmission was ‘bulletproof.’ However, this automatic transmission experiences some issues from time to time. These problems were partly why it phased out and was replaced soon after by the 5R110W.

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Transmission & Drivetrain

Signs of a Faulty Torque Converter

The torque converter is a susceptible, complex, but essential component of traditional automatic vehicles. In technical terms, a torque converter is a form of fluid coupling generally known as ‘hydraulic coupling.’ It is a perfect alternative to the mechanical clutch you find in manual transmission. In ideal working conditions, torque converters multiply torque at lower revolutions per minute. This enables you to generate more power than possible via simple fluid coupling. When a torque converter goes bad, it can severely damage the transmission. A faulty torque converter can also result in overheating, friction, and degradation of the transmission fluid.

How Does a Torque Converter Work?

Torque converters operate in three distinct phases, as outlined below.

Stalling

Whenever you brake at a red light or come to a halt when you come across a ‘stop’ sign, your car engine still runs or idles. The torque converter applies power to the independently-rotating impeller without coupling with the turbine.

Acceleration

As soon as the red light turns green and you press down on the gas pedal, the impeller responds immediately by rotating at very high speeds. Since the turbine often rotates slowly, torque multiplication is generated instantly.

Coupling

The turbine rotates at approximately 90 percent of the impeller speed when your automobile starts moving at a fast clip. This results in torque multiplication. The lock-up clutch efficiently locks the turbine to the impeller at this point. This provides greater efficiency while preventing slippages.

The Torque Converter and Components Around It

The torque converter is often positioned between the transmission and the car engine’s flex plate. It comprises the following different components below.

Housing

The impeller is mounted on the torque converter housing. The latter is connected to the engine.

Impeller

The impeller is a vital component that comes with curved blades and is usually filled with fluid. When the impeller’s blades spin, the impeller sends forth fluid via centrifugal force. The faster the blades rotate, the more fluid is forced backward, resulting in energy transmission to the turbine.

Stator

The stator is a component conveniently interposed between the turbine and impeller. It receives fluid and turns the flow of fluid at nearly 90-degree angles. This results in torque multiplication.

Turbine

The turbine is positioned opposite the impeller. It comes with curved blades designed similarly. The turbine receives fluid from the impeller and rotates as this fluid flows against the blades. The turbine trades the fluid back and forth, which transmits rotating mechanical power via fluid coupling.

Turbine Output Shaft

The turbine output shaft connects the transmission and turbine and the vehicle’s wheels. These are the components that surround the torque converter. If any of these components suddenly fail, your torque converter will go bad, too.

6 Telltale Signs of a Faulty Torque Converter

The following are the top common signs of a faulty torque converter you should know.

1. Loss of Acceleration

If you notice that your vehicle shudders when you step on the gas pedal or feel somewhat sluggish or find it difficult to accelerate, your transmission may have a problem. In many cases, the key culprit behind such developments is the torque converter.

2. Leaking Transmission Fluid

The transmission fluid is essentially the ‘blood’ of the transmission. It is crucial to the overall health and extensive performance of the torque converter and the entire transmission system. If torque converter seals get damaged or worn out over time, it may lead to transmission fluid leaks. This is why you shouldn’t take any chances whenever you notice that your transmission fluid is leaking. Leaking transmission fluid indicates something is wrong and must be addressed immediately. This helps avoid significant internal damage and costly repairs if ignored for a long time.

3. Slipping Between Gears

Automatic vehicles are primarily designed to shift seamlessly between gears. Most drivers feel this smooth movement, especially when they decelerate or accelerate quickly. However, if you feel your vehicle slipping between gears or find it challenging to stay in a specific gear, you may have a torque converter problem. You should arrive at this conclusion when the shifting also feels strange or rough.

4. Contamination of Transmission Fluid

Transmission fluids can get contaminated. Therefore, it is a big sign of trouble if you suddenly notice that your transmission fluid looks milky, burnt, dark, or filled with debris such as metal fragments or shavings. You need to service your transmission right away. This could be everything you need to get fresh transmission fluid flowing through the system again. Bad transmission fluid could also imply issues with the torque converter or other internal transmission problems. Getting an expert transmission specialist to perform proper inspections is essential.

5. Overheating Transmission

Your vehicle transmission comes with an ultra-sensitive temperature gauge. This gauge warns you as soon as your transmission starts overheating. It is not ideal for your transmission to overheat. If it does, it causes serious concern. Therefore, get your vehicle to the best transmission specialist in your area. A failing torque converter – or internal damage – may be the culprit behind an overheating transmission. Let the issue be addressed as soon as possible to avoid extensive and costly repairs.

6. Refusal of the Vehicle to Shift

The most prominent sign of a faulty torque converter is when your vehicle refuses to shift into a particular gear. If you cannot get your car to shift into forwarding drive or reverse or refuse to engage, something is wrong with the torque converter. It must be inspected immediately by a specialist for prompt repairs.

The Bottom Line

 These are some of the top common signs of a faulty torque converter. Therefore, if you notice any of the symptoms discussed above, find your way to the nearest local mechanic as soon as possible for multi-check inspection and road tests. Make sure you work only with certified torque converter technicians as they know how to perform minor repairs and simple component replacements. They can also complete overhauls if required and use only brand-new tools, diagnostic technology, and equipment.

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Transmission & Drivetrain

6 Tips to Boost Auto Transmission Performance

A vehicle auto transmission is a complex mechanical system that can be expensive to replace when damaged. This cost is why utmost care is essential to ensure it remains clean and operates efficiently for a longer life span. The primary goal of transmissions is to move vehicles from one point to the other with some assistance from the engine.

The 3 Types of Vehicle Transmissions

Three types of vehicle transmissions exist:

  1. Manual transmission
  2. Automatic transmission
  3. Continuously variable transmission

The automatic transmission and manual transmission often require service intervals. But the continuously variable transmissions have no need for service intervals as they come as sealed units.

How to Improve Your Auto Transmission

There are up to 6 ways to significantly improve the reliability and performance of your vehicle’s automatic transmission. Here they are, arranged in no specific order:

1. Regular Auto Transmission Maintenance

Servicing your auto transmission regularly helps guarantee its longevity. You can take your vehicle to the local mechanic, though it is something you can do on your own if you’re a DIY enthusiast. However, you will need the following tools/materials:

  • Protective clothing
  • Disposable gloves
  • A flashlight
  • Torque wrench
  • Jack stands
  • A pair of safety glasses
  • A drip pan
  • Creeper
  • SAE and metric socket set
  • Wheel chocks
  • A small funnel
  • SAE and metric wrench set
  • Floor jack
  • A new filter

Ensure your vehicle is parked on a flat surface. Confirm the transmission is in “park” since your car is automatic. Secure the rear tires with the wheel chocks. Then engage your vehicle’s parking brake. This action locks the rear tires and prevents them from budging. Position the floor jack under your vehicle at its specified jacking points. Operate the floor jack until it lifts the car off the ground, with its front wheels balanced in the air. Fix the jack stands at the appropriate jacking point locations and lower your vehicle until it rests on the jack stands. Most modern cars come with jack stands on the pinch weld, right under the doors, and along the vehicle’s bottom.

Get the creeper under your vehicle to locate the transmission oil pan. Position the drain pan beneath the transmission oil pan. Drain the fluid out by removing the oil pan plug if your vehicle comes with one. If it doesn’t, remove each bolt of the transmission oil pan but leave one bolt each in the rear and front of the pan. Then remove the bolt at the end slowly so the fluid drains out.  Detach the transmission oil pan. Remove the bolt at the front to allow the remaining fluid to drain out. Remove the oil filter and replace it with a new transmission oil filter. Install the new grommet, which helps prevent leakages at the pump’s inlet.

Scrape off the old gasket from the transmission oil pan and case. Fix the new gasket onto the transmission oil pan and install it onto the transmission using two bolts. Start your vehicle engine with your foot on the brake. Tighten the bolts and fill up the transmission via the open port using the funnel. Put the transmission in gear for some seconds and then into neutral for another couple of seconds. Put the transmission in neutral before putting it in “park.” This action helps prevent damages that may occur if the tires spin through the brakes.

2. Lowering Gears When Driving With Heavy Loads

Using the right setting for your auto transmission is also one of the most efficient ways of improving your vehicle’s performance. If you’re driving through heavy traffic or bearing heavy loads, use your vehicle’s drive selection for the transmission. Do not overdrive, as this puts much undue pressure on your gears. Overdriving could lead to slippage and irreparable damage. Therefore, always lower the gears whenever your vehicle bears heavy loads.

3. Changing Driving Habits

When you change your driving habits, it enhances the auto transmission’s performance and reliability. Start by operating your vehicle and getting someone to monitor all the dash gauges. Take note when the transmission shifts and the particular RPM at the change occurred. Most cars come with a tachometer gauge to measure RPMs, but you can also take note of the speed at which the transmission shifted if your vehicle doesn’t come with an RPM gauge. Analyze the data you recorded to note the speed or RPM at which the shift occurred. Then perform another test drive that you change as soon as you shift the transmission.

4. Ensuring Proper Tire Alignment

Your vehicle’s tire alignment makes a considerable difference in the operation of your transmission, especially during driving conditions. If you’re a DIY enthusiast, you may need the following tools:

  • A flashlight
  • Protective clothing
  • A pair of disposable clothing
  • Jack stands
  • Floor jack
  • Wheel chocks
  • Tape measure
  • A pair of safety glasses, etc.

However, leave proper tire alignment and other essential tasks to professionals who know what they’re doing.

5. Proper Engine Maintenance

Transmissions get neglected when it comes to the overall performance of a vehicle. As soon as your car engine overheats, it causes the coolant within the radiator to boil. The boiling causes the transmission fluid to vanish within the radiator heat exchanger. Fixing a transmission may be easy for most mechanics. But it is not uncommon for these mechanics to forget one simple fact: the excess heat burns out all the additives in the transmission oil. When this occurs, or when the transmission oil evaporates, the transmission is exposed as there’s no fluid to clean and protect it. If your car engine overheats or misfires, fix this problem with your vehicle engine before you service the transmission.

6. Having and Using the Correct Tire Size

Using the correct tire size is essential to prolong your transmission’s performance and life span. Tires contribute to the wear and tear within a transmission system. Wear and tear occur due to overspeeding or overloading. Take your car to your mechanic and get them to work on the wheels.

Key Auto Transmission Takeaways

Boosting your auto transmission performance is not rocket science, especially for DIY enthusiasts. However, if you aren’t, ensure certified professionals perform these procedures to prevent unexpected but costly repairs.

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Blog Posts Engine Transmission & Drivetrain

Horsepower and Torque: The Difference

A vehicle’s two top performance metrics bandied about by car enthusiasts are horsepower and torque. You will find them peppered all over every vehicle’s spec sheet, animated and bolded in every comparison video online, and plastered several times in reviews. But only a handful of individuals truly know the meaning of each metric and the significant differences between them.

Knowing what horsepower and torque stand for is highly essential, whether you’re buying a brand-new or used car. Not understanding the differences between these two metrics can result in poor decision-making when you want to buy your next vehicle.

Horse and torque are part of the metrics that indicate how a car engine or transmission will perform. This alone shows that you shouldn’t take these metrics at face value. Therefore, analyzing them is highly crucial. This is where brushing up on the basics becomes essential.

What is Horsepower?

Horsepower is a unit measurement of power, defined as the rate via which a vehicle engine performs work – as generated by torque. In simple language, horsepower is an excellent indicator of a car’s speed. 

A vehicle’s horsepower depends on its rotations per minute (RPM) and torque. In many cases, your vehicle’s engine won’t be pushed until it accomplishes peak performance. This is why it is very rare for car engines to reach the listed number indicating their total horsepower.

What is Torque?

Torque is the force the rotational movement of your vehicle’s crankshaft generates. It is the primary reason the wheels of your car spin when you press down the gas pedal. It is the precise amount of force you apply to an object in a twisting motion.

As this force acts on an object, it translates automatically to work. Simply put, torque is your vehicle’s ability to perform work or a unit measure of strength.

Differences Between Horsepower and Torque

As you can see, the definitions of horsepower and torque are different, though intertwined. This is because one cannot do without the other regarding the overall performance of a vehicle’s engine. It must also be mentioned that the amount of horsepower and torque a vehicle has significantly affects the overall rate of the wear and tear the vehicle experiences.

They share two similarities: both metrics are essentially byproducts of your vehicle’s engine when you switch on the ignition and press the gas pedal. They are also involved in converting fuel and air within the vehicle’s engine into the energy required for your vehicle to move.

That being said, here are the significant difference between horsepower and torque:

1. Horsepower and Torque Measure Different Things

In simple words, torque is a method of measuring force, as mentioned earlier. But horsepower is all about the power the engine transfers to the vehicle’s wheels. This is mostly based on the weight of the vehicle, the distance the car covers, as well as the time it takes to cover that specific distance.

One of the simplest ways of calculating horsepower is to multiply torque, i.e., force, by rotations per minute.

2. Torque is Crucial for Towing; Horsepower Focuses on Performance

Torque should be your ultimate concern or target if you regularly haul campers, trailers, boats, etc. This is crucial as it helps to minimize strain on your vehicle while contributing positively to pulling the extra load.

Torque helps your vehicle start and even navigate hills. This makes it much more powerful and impactful than horsepower as it keeps your car engine running smoothly while hauling heavy loads. 

Vehicles with higher torques – such as heavy-duty trucks, etc. – may require a bit more time in order to accelerate. However, the low-end power nature of torque is responsible for making haulage possible in the first instance.

On the other hand, horsepower is all about the vehicle’s performance. Cars with high horsepower are primarily designed for car owners who want lots of power and speed under the hood. The higher the rating of a vehicle’s horsepower, the faster it will go relative to its overall size.

For instance, a sports car and a large sedan may share the same horsepower rating. However, the sports car will outpace the other vehicle simply because it is more compact or lighter. Vehicles with lots of horsepower also offer exceptional handling on the roads.

This does not imply that vehicles with higher horsepower ratings don’t need torque. They do; in fact, such vehicles rely heavily on torque. However, most vehicles nowadays are designed such that they have the perfect balance between horsepower and torque, which offers the best driving experience.

3. Horsepower and Torque Work Differently for the Acceleration of a Vehicle

As you press the gas pedal of your vehicle, there is a combination of horsepower and torque. But regarding how your vehicle accelerates, both metrics have unique functions. 

Summed up briefly, the primary job of torque is to ensure your car moves when you initially hit the gas pedal, i.e., accelerate. But when the vehicle is in motion, horsepower is left with the responsibility of getting you up to and efficiently maintaining speed for your drive.

4. Horsepower and Torque Have Different Impacts on the Fuel Efficiency

Everyone who desires to purchase a car will probably make fuel efficiency a vital factor to look out for.

Horsepower and torque have significant impacts on fuel efficiency but in different ways. For instance, the more horsepower a particular vehicle has, the faster it burns fuel, whether under standard driving conditions or on acceleration.

On the other hand, a vehicle with a low-end torque burns fuel slowly, depending considerably on your typical hauling and driving habits. This shows the different impacts both metrics have on any vehicle’s fuel efficiency.

Amp Up Horsepower and Torque for Solid Performance

The importance of horsepower and torque when it comes to the overall performance of a vehicle’s engine cannot be overstated. However, knowing the considerable differences between these two performance metrics will go a long way in helping you make the right buying decision whenever you’re in the market for a new or used car.

This doesn’t imply that everything you know about a vehicle’s performance is all lies. Horsepower still matters a lot and continues to be an incredibly useful metric. The only thing is the disproportionate emphasis most people place on it. When you step on the gas pedal, what you generally feel is nothing but torque.

Shop Torques, Converters, and More at Gearstar

Looking to upgrade or replace your torque? Shop with us at Gearstar. We have a range of torques to choose from for Ford, GM, and Mopar transmissions.

For all other questions, send us a line through our online contact form or by phone. You may also check out our resources and support section for how-tos and more.

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Maintenance Repair Transmission & Drivetrain

Fixing a Transmission: 6 Benefits of Hiring an Expert

As a vehicle owner, the ability to do small maintenance tasks can save you a few dollars here and there. Installing a new car battery, adding oil, or screwing on an air filter are small tasks most car owners can do. However, it is another ball game when it comes to fixing a transmission and any parts associated with it. You’ll need the professional assistance of an expert.

Many car owners make the mistake of visiting standard auto mechanics or service centers. Although the average mechanic can easily handle simple transmission repairs, they don’t have the requisite tools for high-tech diagnosis of transmission problems.

If your transmission has a more serious issue, a standard auto repair mechanic may not be capable of handling it. You will still need to find a transmission specialist who knows the ins and outs of vehicle transmissions and can expertly and accurately diagnose its problems.

This will cost you 2x more money and precious time, which you should not trade for anything. In order to avoid these, you should always opt for a specialist anytime you have transmission problems.

The Advantages of Hiring an Expert for Fixing a Transmission

If you are still not too convinced about the importance of having a specialist work on your faulty transmission, these benefits would:

1. Repair Complexity

Transmission is one of the most integral and complex pieces of a vehicle’s system. Unlike the punctured car tire you can easily change or a small hose you can patch without breaking a sweat, transmission issues are usually complicated.

Transmissions are made up of multiple components and pieces, and each of these parts can easily experience problems. Moreover, transmission designs vary by model and make. 

Only a well-trained and experienced professional can swiftly give an accurate diagnosis of any transmission problem. Experts use industry-specific computer programs to tap into the computer system of a modern vehicle in search of accurate diagnoses of car issues.

Professional mechanics know how to run these computer programs efficiently. They also possess the necessary tools – which often reflect the complexity of transmission repairs – required to fix faulty transmissions.

2. Warranty Protection

At least two iron-clad warranties become functional here. First, having an expert perform transmission repairs helps protect your vehicle’s warranty. Secondly, most highly trained and experienced specialists offer their own warranties on transmission repairs.

This implies that in the rare or uncommon case the expert misses something during transmission repairs, you will be protected from paying out of your pocket for additional repairs.

Ensure you make inquiries, read, and fully understand whatever extended manufacturer warranty the mechanic offers before they start working on your vehicle.

3. Cost-Efficient

Fixing your transmission can be expensive, especially if you don’t have the ideal tools. You should not engage in such activity without the necessary repair components and tools.

Hiring an expert is the most affordable choice since they have all the right tools and repair components.

4. Eliminate the Stress of Repairs

It doesn’t even matter if you are an experienced Do-It-Yourself mechanic. The pressure of getting your vehicle running again in top-notch condition will subject you to a lot of stress.

For instance, you will spend lots of money – and time – tracking down the appropriate tools for fixing the defective transmission. Taking down, repairing, and re-installing a transmission is not a one-man job, i.e., you will require at least another pair of hands. You will need to call up a couple of your friends who also have time to kill and are willing to assist you in your repair quest.

As you can already see, the stress of doing it yourself is not worth it. The best way is to get an expert to check the transmission, give accurate diagnoses, and take steps to fix the issues for good.

5. Peace of Mind

Having an expert work on your vehicle’s transmission gives profound peace of mind. Maintaining a healthy transmission or repairing a faulty one will get you through adverse conditions such as off-road terrains, bad weather, etc.

A professional mechanic can easily detect the daily wear-and-tear issues transmissions undergo. They can fix these issues before they escalate into something significant and expensive.

6. Specialization

A car transmission expert is not the usual Jack-of-all-trades mechanic in many cases. An expert has undergone the proper training and is certified and knowledgeable at efficiently diagnosing high-tech transmission issues, especially in heavy-duty vehicles like trucks and vans.

They also have a better experience as understanding particular causes of transmission issues in specific vehicles is their forte. This is what you need if you value your time and money.

Quick Tips to Keep Your Vehicle Transmission Healthy

Keeping your vehicle transmission in tip-top shape on a daily basis is highly essential. Follow these quick tips that will help ensure your transmission remains healthy at all times:

Transmission Flushes

It is vital to change your fluids from to time. Having low fluids and not doing anything about it is a recipe for future transmission issues or difficulties.

Always address low transmission fluid as soon and as soon as possible. Avoid driving your vehicle when its transmission fluid is low or below the recommended level.

Replacing a seal is less expensive, can easily fix the problem, and save you lots of your hard-earned cash on repairs down the road.

Do Not Ride the Brake

You force your transmission to work even harder whenever you drive with your foot heavy on the brake pedal. Avoid doing this as much as possible in order to prevent transmission problems.

Use the emergency brake each time you park your vehicle on an incline. This helps to minimize stress on the parking lineage.

Always Stop Your Vehicle Completely Before Shifting from Reverse to Drive

Anytime you are in reverse, such as backing out of a particular parking spot, etc., ensure you stop your vehicle completely before shifting into Drive.

You must have experienced the dreaded ‘engine drop’ when you don’t stop before shifting gears. When you stop completely before shifting gears, it helps prevent the transmission from unwarranted strain.

Leave it to the Professionals

The benefits of hiring an expert for fixing a transmission cannot be overstated. You may be able to do minor fixes like changing your car tires, installing a vehicle battery, or even screwing on an air filter.

But when it comes to repairing a faulty transmission, leave it to the professionals. You will have profound peace of mind, protect your warranty, and have a specialist handle every complex issue on your behalf.

For more tidbits on transmissions, converters, controllers, and more, visit Gearstar each week. For any questions or inquiries, contact one of our professionals today. We would be glad to assist you, whether it be for a GM, Mopar, or Ford transmission. You may also visit our support page for resources and how-tos for installation tips, tricks, and more.

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Transmission & Drivetrain

Replacing a Transmission: Is it Worth it?

Experiencing transmission issues is inevitable as long as you are an active vehicle owner and user. However, the real challenge that you could face is making up your mind about repairing or replacing a transmission.

Each time your vehicle transmission shifts, gears, bands, and clutches within the mechanical system must apply and release so that the shift will occur. This strain occurs regularly and over time, resulting in extensive wear. This could, in turn, lead to some catastrophic or major transmission failure.

Repairing faulty transmissions is one of the costliest ventures you could make on your vehicle. This is why you need to ask yourself these important questions: “Is repairing the transmission worth it, or should you replace it? Is replacing the transmission even worth it?”

The truth is that there is no one straight or one-size-fits-all answer to this question. However, repairing the transmission is a better and less expensive option unless your vehicle’s transmission breaks down prematurely.

When a vehicle attains a particular mileage count and age, it doesn’t really make much sense to get a new transmission. This is because the latter will be much more than the vehicle’s current worth.

A transmission breakdown in a relatively new vehicle will require immediate fixing. If you own a vintage automobile, repairing any transmission issues is the best bet.

Factors That Influence the Costs of Replacing a Transmission

The transmission of a modern vehicle is not one solid piece but a jumble of several moving parts. This is the primary reason fixing a vehicle’s transmission is more expensive.

Other factors that influence the overall costs of replacing a transmission include:

  • The age of the vehicle
  • The car manufacturer
  • Is the transmission manual or automatic?
  • Where are you getting the repairs to your vehicle?
  • Who have you quoted to perform the repairs on your vehicle?

These factors will influence your decision to replace or repair your transmission.

1. What is the current worth of your vehicle?

As mentioned briefly earlier, before you decide whether to replace your transmission, compare the cost of replacing it to the total (current) worth of the vehicle.

A brand-new transmission costs anything from $1,000 to $7,000+. Therefore, if the current worth of your vehicle ranges from $8,000 to $10,000, replacing the transmission will be worth it.

But if your vehicle is under or within the transmission range, it won’t make much sense to replace its transmission. The best way out is to scrap and sell off your vehicle in order to get a new car.

Moreover, the overall cost of replacing a vehicle’s transmission depends primarily on the type, model, or make you own. For instance, replacing the transmission of an exotic or luxury vehicle will cost you $10,000 or more. But that of a truck will cost up to $3,000, while a sedan’s new transmission does not usually cost more than $2,800.

2. How Much Will It Cost to Repair a Damaged Transmission?

You should get a well-detailed quote from an experienced mechanic. The quote should highlight how much it will cost you to repair the faulty transmission. If only the transmission troubles your vehicle – and no other component is involved – the quote should mention this.

Get the mechanic to perform an extensive examination of your vehicle in order to find any latent repair issues that need attention. This should be done before agreeing to fix or replace the transmission. The mechanic may come across something else that’s broken and requires fixing. If they do, get quotes for them, too.

It’s all about knowing precisely how much you’re expected to spend in order to get your vehicle up and running.

3. Does this vehicle still meet your needs?

You may have bought the car when you were still a bachelor. But now that you’re married with a couple of kids, the vehicle may not be the ideal one for you at the moment.

Find out if repairing the vehicle is worth it before selling it off and the price it commands. But set your mind on getting another vehicle that will capably meet you and your entire family’s needs. 

4. Is this vehicle well maintained?

The transmission is one of the components that easily go prematurely. In some cases, repairing the transmission will be worth it.

However, your maintenance procedure is key in this instance. If your car is not properly or well maintained, or you have poor driving habits, you may need to consider scrapping or selling off the vehicle.

But if you have always maintained the vehicle in pristine condition within and without, repairing the transmission may be worth it.

5. How Much Longer Do You Want or Intend to Keep This Vehicle?

Some vehicle owners drive their automobiles until they break down. This has significant financial benefits you should consider.

But if the vehicle has operated well all these years and only recently developed this transmission problem, ask how long you intend to keep this vehicle. Would you love to keep driving this vehicle for the next three years or more? If you answered in the affirmative, you should replace your transmission immediately.

You will get your money’s worth out of this brand-new vehicle transmission before selling off the vehicle.

If your automobile is still worth a lot of money, replace the transmission. You will still need to take this action whether or not you have decided to drive it or sell it off. No sane person will pay you a lot of money for a vehicle they can’t drive – since it has no transmission. Driving your vehicle is impossible without a transmission.

One primary advantage of replacing your transmission is the amount of money you will save. Another benefit is the automatic solving of every transmission problem you have encountered.

The Verdict?

As you already know, replacing a transmission is a costly repair job. When you have a major transmission issue, you should ask yourself this all-important question: “Is replacing the transmission worth it?”

Go through the reasons or questions highlighted above. This helps you make informed decisions after contemplating whether replacing the transmission is worth it.

For more updates on all things transmissions, visit Gearstar online every week. Browse our selection of high performance transmissions, converters and controllers parts, and much more! Regardless if you’re looking for the perfect custom transmission for GM or Mopar, we’ve got you covered. Can’t find what you’re looking for? Contact us today and our experts will be glad to assist you with questions about our products. You may also check out our transmission support and resources section for additional help.

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Maintenance Transmission & Drivetrain

5 Tips to Prevent Transmission Overheating

Heat and transmissions are archenemies and will never go hand-in-hand. When transmission overheating occurs, it can cause multiple problems in your vehicle. This makes heat the principal cause of most premature transmission failures that car owners experience from time to time. 

Overheating transmissions account for about 90 percent of every automatic transmission failure recorded. It is so severe that you may need a total replacement, which will cost you a substantial amount of your hard-earned money. 

This is because it is primarily responsible for the following transmission issues:

  • Failed bearings
  • Cracked gears
  • Inoperable solenoids
  • Ruptured seals
  • Slipping transmission bands
  • Delayed clutch engagement

Whatever component is within the area where the transmission is located can suffer a breakage due to too much heat.

Causes of Transmission Overheating

Heat is a silent killer that has surreptitiously claimed the very active life of an innumerable number of transmissions. In many cases, excessive transmission heat goes unnoticed until something breaks, and it becomes too late to fix it. It may even be quietly damaging your vehicle each time you put it in gear.

The primary causes of excessive transmission heat include:

  • Low fluid levels
  • Solenoid problems
  • Fluid leaks
  • Old/burnt fluid

Other factors that contribute to the overheating of transmissions include:

  • Living in an area with a hot climate
  • Towing heavy loads/caravan with your vehicle
  • Always driving stop-and-go in heavy traffic, etc.

This is why it is essential to know what to do in order to reduce transmission temperature. This will protect your vehicle and save you lots of money in the end.

The Automatic Transmission Fluid

The automatic transmission fluid works efficiently to take away heat from the transmission. However, it also provides lubrication as well as the pressure required when changing gears. Expanding springs, spinning gears, and whirring turbines generate a lot of friction as they function.

This friction generates excessive heat, which, if left unattended, can cause varnishing, stress fractures, etc. The damage to the transmission’s internal components can be so severe that you will have to replace them.

This is why the automatic transmission fluid, which contains chemical additives, is formulated to absorb heat efficiently and flow through every moving component. 

The hot fluid transmits the heat from the transmission to the radiator, forcing it through a specialized cooling chamber. This chamber makes use of aluminum fins that efficiently remove the heat from the automatic transmission fluid.

How to Prevent Excessive Transmission Heat from Destroying Your Transmission

If your vehicle undergoes heavy use every day, you should be worried about your transmission overheating.

However, don’t fret: these tips will show you how you can prevent transmission overheating:

1. Install External Transmission Coolers

If your vehicle consistently hauls auto parts, other automobiles, wood, or heavy tools, you risk overheating your transmission. Your transmission will overheat due to the increased stress applied to your vehicle due to excess weight. This is more evident if your vehicle travels to and from hilly terrains.

Consider installing an external transmission cooler in your vehicle. External coolers are highly effective in keeping your transmission cool or at a regulated temperature, irrespective of the increased stress. External coolers will also work to minimize friction to the transmission, another cause of severe damage.

Visit the local transmission workshop to request or buy an external transmission cooler suitable for your vehicle. You can install the device on your own or get assistance from a professional mechanic.

2. Go Neutral from Time to Time

If you find yourself – in your vehicle, of course – sitting idly for a brief moment in traffic, shift your transmission into neutral and relax. Allow your vehicle to idle until the next moment when you have to move when traffic moves accordingly.

Allowing your vehicle to idle in neutral in heavy traffic, on railroad tracks, or while sitting at a red light significantly minimizes the strain on your vehicle’s transmission. This is your transmission’s chance to lose intensity by cooling down.

This action will prolong the lifespan of your transmission. Allowing your vehicle to idle in neutral when it is not in use will also reduce the amount of fuel your engine consumes. This means more money in your pocket as you save a lot of money as time goes on.

3. Check The Transmission Fluid Regularly

Make time to check your vehicle’s transmission fluid at least once a month. This makes it easier to identify burnt or worn-out dirty fluid or low-level fluid issues. These warning signs are easy to spot before they cause severe transmission issues that can utterly destroy your transmission.

4. Add A Deep Pan

Consider adding a deep pan if you experience excessive transmission heat. Deep pans allow users to add more fluid to vehicles. This, in turn, spreads out the heat, dissipating it and removing it completely from the transmission within a short period. 

Ensure you use only aluminum pans as they dissipate excessive transmission heat much faster than steel-constructed deep pans.

5. Change The Transmission Fluid On Time

Ensure you change your transmission fluid every 30,000 to 60,000 miles. You can do this easily on your own. But if you are not a DIY enthusiast, get your vehicle to the nearest transmission workshop in order to flush the fluid out of your vehicle.

However, if you live and drive your vehicle in a hot climate or find yourself hauling heavy loads from time to time or engaging in lots of stop-and-go traffic, it is advisable to change your transmission fluid every 15,000 to 20,000 miles.

This ensures your transmission fluid remains fresh at all times so that it can work efficiently by cooling the transmission.

Keepin’ it Cool

Overheating is one of the #1 causes of transmission failure. Research shows that excessive transmission heat accounts for up to 90 percent of automatic transmission failures. It is often undetectable until it is too late.

This is why it is crucial to do everything within your power to cool your transmission or prevent it from overheating. The tips shared in this post, if adhered to strictly, will prevent the occurrence of excessive transmission heat.

For more information, news, and tidbits on all things transmission and converters, check our news section weekly. Gearstar specializes in building quality automatic transmissions from the ground up. Contact us today and see the difference.

Categories
Maintenance Transmission & Drivetrain

Keep Your Engine Purring with a Transmission Flush

Most vehicle owners usually focus on inspections, oil changes, battery replacements, tire care, brake service, and air filter checks. Indeed, every vehicle requires family care routines for optimal performance. However, one vital service consideration often overlooked by most car owners is transmission maintenance–specifically a transmission flush.

Most transmission issues often end in replacement, costing thousands of dollars. But you can perform preventative services such as transmission flushes to keep your transmission in top-notch condition.

Here’s what you should know about keeping your engine purring with a transmission flush.

But before then, let’s check out what a transmission does in your vehicle.

The Transmission

The transmission is one of the hardest-working and complex components in a vehicle’s engine. It is responsible for shifting gears within the motor and serves as the powerhouse of any vehicle.

Transmissions generally require proper maintenance, which includes constant lubrication via a transmission fluid. The latter protects the transmission from oxidative reactions as well as from the wear and tear that occurs due to the constant shifting and driving.

Why is a Transmission Flush Necessary?

The transmission fluid helps regulate temperature while keeping every component within the gear mechanism working seamlessly with zero friction.

However, since transmission fluids absorb heat when regulating the temperature within the gear system, the fluids start breaking down and burn over time. Waiting too long for a transmission flush may cause your transmission to deteriorate.

Transmission fluid flushes are necessary since they help prevent transmission issues. They work to ensure your vehicle is in peak condition at all times.

A transmission flush involves cleaning out old, dirty, and lackluster fluid from your transmission system and replacing it with fresh and clean transmission fluid. This process keeps your automobile healthy for a long time.

An ideal transmission flush should generally involve a transmission servicing such as:

  • Installing a brand-new air transmission filter
  • Installing a brand-new pan gasket
  • Fluid drain and removal from within the system, etc.

A transmission flush eliminates the need for costly transmission repair. It boosts overall engine performance while allowing your vehicle to shift gears smoothly and easily.

When is the Perfect Time for A Transmission Flush?

“But when exactly do I need a transmission fluid flush?” you may be asking. There is no one-fits-all answer for this because the measure of this service depends significantly on your driving patterns as well as your automobile.

Check the Owner’s Manual

However, you can get an insight by checking your owner’s manual. The manual should indicate the number of miles you need to cover in-between performing maintenance transmission flushes.

But if you can’t find any transmission flush guidelines in your owner’s manual, don’t fret. Your car engine could be one of the few that comes with a ‘lifetime’ transmission fluid, especially if the transmission is sealed.

Nevertheless, even sealed transmissions can permit contaminants into the workings of your vehicle and cause an issue or two, albeit at a much slower rate than traditional car engines.

Therefore, you may still require a transmission flush every few years. Your local mechanic or the official site of your vehicle manufacturer may share some insight.

Transmission Fluid Checks

You can also perform transmission fluid checks which is another accurate and incredibly easy way to determine if you need a transmission flush. 

Get a professional mechanic to look under your hood and check your transmission fluid’s overall status. You need to verify that the transmission fluid levels are not overly full but full enough.

You need to also confirm that the transmission fluid is not dirty or discolored by checking the fluid color. It must also be doing its job, including maintaining proper temperatures within the system.

However, you may not be capable of performing this examination or evaluation unless you are a certified engineer or mechanic. If you aren’t, experts highly recommend that you take your vehicle to the nearest local workshop.

Get the mechanic to help you check your vehicle’s transmission fluid. You can also make this request every time you change your oil. This helps you stay far ahead of necessary transmission flushes while ensuring your vehicle receives proper care.

The Benefits of a Transmission flush

The benefits of transmission fluid flushes cannot be overstated. In many cases, a vehicle’s transmission starts showing signs of wear and tear after every 30,000 miles.

Performing a transmission flush eliminates dirty fluid from the system and replaces it with clean fluids. The new, clean fluid re-lubricates the entire transmission system and keeps your engine purring. In other words, your vehicle runs much better as a result of this transmission service.

Here are the unique benefits of a transmission flush:

Prevents Overheating

Metal shavings and other particles from within the transmission eventually accumulate in your vehicle’s transmission fluid. If nothing is done, the transmission and fluid start heating up, causing the particles to burn and overheat every internal component within the transmission system.

This can cause system failures, resulting in costly repairs. A transmission flush prevents these issues.

Boosts Fuel Efficiency

An optimally-functioning transmission places less strain on the other mechanical components in the vehicle. Reducing the amount of friction that rotating and moving parts produce results in an increase in the amount of energy that is transferred to the wheels.

This significantly improves fuel economy and saves you money on gas down the road.

Enhances Gear Operation

An overheating transmission turns the transmission fluid into a gooey, thick sludge. This development of clogged gears makes it difficult to shift between speeds.

A timely transmission flush eliminates or prevents this condition and improves gear operation.

Take Care of Your Transmission

Transmissions are an incredibly large part of the movement of any vehicle. If your transmission fails to function, your vehicle goes nowhere.

You can ensure the continuous functioning of your transmission by performing a transmission flush from time to time. A transmission flush helps prevent overheating, improves fuel efficiency, and enhances gear operation, among several other benefits.

Get a professional mechanic to check your transmission today to determine if you need a transmission flush. It could save you the thousands of dollars required to repair or replace a broken-down transmission.

Visit our news section every week for more insights, tips, and advice on transmissions. Gearstar specializes in building automatic high performance transmissions, built with phenomenal quality by expert builders. Contact us today for questions or inquiries about our transmissions, converters and controllers.

Categories
Maintenance Transmission & Drivetrain

Transmission Fluid Color: What Do They Mean?

Do you know how revealing transmission fluid color is? It can help diagnose transmission issues while showing the overall health of your vehicle’s transmission.

The color of your car’s clean and fresh transmission fluid is usually bright red for a reason. But over time, the bright red color changes to maroon and brown. Should you be very concerned when this happens? This article will reveal the answer you need.

The Importance of Transmission Fluid

The transmission of your vehicle is highly essential in getting it into motion. Although the engine is primarily responsible for creating power, the transmission’s job is to transmit that power to the wheels. 

The transmission requires adequate fluid to reduce the friction between gear sets, create pressure, clean internal components, and prevent overheating. The fluid helps protect every component within a transmission system and keeps it free from dirt.

Checking the Transmission Fluid Color

You can determine the color of your vehicle’s transmission fluid in your transaxle or transmission by following these steps:

  1. Open your car’s hood and locate the transmission dipstick
  2. Pull out the dipstick from the filler tube
  3. Determine the color of the fluid

Check the fluid at the end of the dipstick and try to determine its color. You can place some drops of the transmission fluid on a clean white sheet of paper to obtain a more accurate reading.

There is an automatic transmission fluid color chart that you can utilize. Match the color of the transmission fluid to the fluid color chart. This will give you an accurate explanation and what you need to do.

But first, let’s check out the various colors of transmission fluid that you may likely come across.

Transmission Fluid Color and What It Means

Red

Most brand-new transmission fluids have this color. It shows the fluid is not contaminated or dirty. The see-through, viscous transmission fluid has not oxidized and can efficiently protect the transmission and facilitate shifting gears.

This implies that no action is required whatsoever when the transmission fluid still shows this color.

Pink

Your transmission fluid should never be pink. Transmission fluid with this color implies the presence of engine coolant or water. This diluted transmission fluid can easily damage your transmission.

Therefore, when you notice that the transmission fluid color is pink, take your vehicle to your local mechanic’s workshop. Get the fluid drained from your transmission with the assistance of a professional technician.

Orange

If the transmission fluid looks orange, it is still in good working condition. However, it is an indication that the fluid is getting older.

You don’t need to change it yet as long as you can see through the transmission fluid with its orange hue. You can still drive your vehicle around for some time – i.e., a few more days or weeks – before flushing out the transmission fluid and refilling the gear mechanism.

Light Brown

When your transmission fluid has a light brown hue, it also shows that it is getting older. The fluid may still be translucent and pose no danger to your transmission, meaning you don’t have to change it yet.

Light brown transmission fluid is not really a sign of problems. You can still drive your car a bit longer before changing the fluid.

Brown/Dark Brown

However, as soon as the hue of the transmission fluid in your vehicle turns brown or dark brown, you have to change it. This usually occurs after your vehicle must have done up to 30,000 miles.

Brown or dark brown transmission fluid is no longer translucent but opaque. You can no longer see through the transmission fluid anymore. It is oxidizing – i.e., the fluid is getting filled with air bubbles which prevent the transmission fluid from doing its job effectively – and is no longer viscous.

So, change it right away as soon as you notice that your transmission fluid has taken on this color.

Other Ways to Check the Condition of Your Transmission Fluid

There are other ways to determine the overall condition of your transmission fluid.

The Smell of the Transmission Fluid

You can smell the transmission fluid. If it has a burnt odor, it simply means that the fluid is completely oxidized and overheated

The outcome is that the fluid offers poor lubrication, increased heat, and friction. This may result in excessive wear and severe damage to seals and internal components.

In fact, in many instances, burnt and smelling transmission fluid already implies that the gear mechanism itself has suffered some internal damage. You need to change that transmission fluid as soon as possible and have the technician check out the overall condition of the transmission itself.

The Blotter Test

Place a few drops of the transmission fluid on a paper towel. Wait for about 30 seconds. If the fluid is light brown or red or spreads out across the paper towel, no further action is required. The transmission fluid is in excellent condition.

But if the transmission fluid does not spread across the paper towel or looks dark, it implies that it has completely oxidized. You will need a filter and fluid change or have to flush out the transmission fluid from your vehicle.

Consistency is Key

Your vehicle’s transmission fluid color is one of the best ways to determine the overall health of your vehicle. You may also consider its smell and consistency in order to buttress what you suspect.

Most transmission fluids are red, though it is also not uncommon to get some in yellow or even blue. As the transmission fluid ages, the color changes gradually.

Therefore, consider changing the transmission fluid when its color has become dark brown. By protecting your vehicle’s transmission via maintenance, you prolong the transmission’s life span. You also prevent expensive rebuilds or replacements.

Make sure you don’t settle for less than the best transmission fluid for your car for optimum performance. For questions or inquiries, and all things transmission or converter, visit our resources and support page for tips, tricks, and how-tos. You may also contact Gearstar using our online form or give us a call. We will be glad to assist you!

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