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How Often To Change Transmission Fluid?

ByTsukasa Azuma-August 08, 2024

How often to change transmission fluid will be a long tedious debate if you want a generic answer without going into the nitty-gritty of your car, such as its make, operating conditions, the nuances you notice during gear shifting, etc.

How Often To Change Transmission Fluid?

To make an informed decision on how often should transmission fluid be changed depending on your own vehicle’s needs, you can follow a few simple guidelines. 

However, your first point of reference should always be the maintenance section of your owner’s manual. If the manual does not contain any recommendations, then you can determine based on the following factors.

1. Transmission Type: Automated or Manual?

Different transmission systems use different types of fluids. Fluid degradation over time is more common with automatic transmissions due to high heat generation from hydraulic pressure. 

Contamination of the transmission fluid is a bigger problem in manual systems. It happens because they have more moving parts causing more wear from friction.

Fluid changing depends on the transmission type. (Photo Source: txautonet)

What can you do to make the transmission system last longer? Consider replacing the fluid at about 75,000 to 100,000 miles intervals for automatic transmissions. 

It will be from 30,000 to 60,000 miles in case of manual systems. A more frequent fluid change is rather helpful and does no harm, in case you are wondering.

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2. Driving Habits

For normal driving at regular conditions, you don’t need to change transmission fluid often. But you will need frequent transmission fluid changes if your vehicle is used in ways other than ordinary conditions, such as:

  • Towing or heavy carriage,
  • Driving at low speeds for extended periods of time
  • Driving frequently on uneven terrains

Depending on the extent of use, you might have to change it frequently. The rule is to change at every 15,000 miles for manual transmissions and 30,000 miles for automatic transmissions. 

Keep the fluid under regular checking. Opt for a change if the color is anything other than the characteristic bright red.

Things To Watch Out

Various models of the same car maker may have different servicing requirements, for instance, Honda transmission fluid change is not the same for a Vezel and an Accord, or even for Honda Accord 2006 and 2018.

It is not a good idea to ignore the manufacturer’s recommendations for how often to change transmission fluid.

A low fluid level is a shortcut to transmission failure or quick damage. Pay a visit to a service shop and test the fluid level if you doubt a leakage or find gear shifting strenuous.

Also, get your transmission system checked immediately if you feel the gear slipping, notice any unusual sound or vibration from the transmission or feel any inexplicable difference in your vehicle while handling your gearbox or transmission.

If you have never changed your transmission fluid yet, and your odometer reads above 100,000 miles, check out this article on black transmission fluid before you decide whether it’s a good idea to change the fluid at all.

Various models of the same car maker may have different servicing requirements. (Photo: OHS Body Shop)

FAQs

1. What are the signs that my transmission fluid needs changing?

Signs include rough shifting, slipping gears, transmission overheating, and a burnt smell. If you notice any of these symptoms, it’s time to check and possibly change the transmission fluid.

2. Is it necessary to flush the transmission fluid, or can I just do a fluid change?

A fluid change, which replaces a portion of the fluid, is often sufficient for routine maintenance. Transmission flushes are recommended in specific situations or for high-mileage vehicles.

3. What type of transmission fluid should I use?

The type of transmission fluid required depends on your vehicle’s make and model. Always refer to the owner’s manual or consult with a professional to ensure you use the correct transmission fluid.

4. Can changing transmission fluid fix existing transmission problems?

Changing transmission fluid can help resolve some issues, such as slipping gears due to dirty or worn-out fluid. However, it may not resolve more severe transmission problems.

5. Is it essential to change the transmission filter along with the fluid?

It’s recommended to change the transmission filter when changing the fluid. The filter helps remove contaminants and debris from the fluid, contributing to smoother operation.

6. Can I change the transmission fluid myself if I have a continuously variable transmission (CVT)?

Changing CVT transmission fluid can be more complex and may require specialized equipment. It’s often best to have CVT fluid changes performed by professionals.

7. Are there any exceptions to the mileage-based fluid change intervals?

In severe driving conditions, such as towing, extreme heat, or stop-and-go traffic, you may need more frequent transmission fluid changes. Refer to your owner’s manual for guidance.

8. Can I use synthetic transmission fluid, and does it offer any advantages?

Synthetic transmission fluid can offer improved performance and durability, but it’s essential to check your vehicle’s specifications and consult your owner’s manual before switching to synthetic fluid.

9. Is it possible to change transmission fluid without draining the pan?

While it’s possible to change some fluid without fully draining the pan, a complete fluid change often involves draining the pan to remove old fluid and debris.

10. Can changing transmission fluid improve the overall reliability of my vehicle?

Regular transmission fluid changes are part of routine maintenance that can contribute to the overall reliability and longevity of your vehicle’s transmission.

Check out this video from ChrisFix to learn more about automatic transmission fluid!

Conclusion

In conclusion, maintaining the health of your vehicle’s transmission by changing the transmission fluid at regular intervals is a fundamental aspect of responsible car ownership.

This routine maintenance not only ensures the smooth operation of your vehicle but also plays a vital role in extending the lifespan of the transmission itself.

By addressing potential issues early, such as poor shifting, overheating, or unusual noises, you can enjoy the benefits of improved performance, enhanced fuel efficiency, and increased reliability!

Tsukasa Azuma is an awesome car blogger of Car From Japan. He owns a car repair shop at downtown Osaka, and he put all that experience to good use in his sharing posts. Tsukasa’s blog is one of the best resources for information about keeping your favorite imported car running smoothly. Moreover, because of being passionate to learn about the recent happenings in auto industry, he doesn’t only provide great car maintenance tips, he also always updates latest trends in among car brands and share them in his own interesting viewpoint.

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