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When Should I Change My Transmission Fluid?

Transmission fluid is vital to the transmission's operation. Transmission fluid functions as a lubricant to maintain smooth and efficient operation. Obviously, this is assuming that your transmission has enough levels of clean transmission fluid. To achieve this at all times, transmission fluid should be changed frequently. But how and when is sometimes debatable.

Transmission Fluid

There are several transmission issues that can be caused or worsened by insufficient transmission fluid amount or quality. If you are driving around with old transmission fluid, insufficient transmission fluid, or, even worse, both, you are speeding the wear and damage to transmission components. Taking the time to replace it when necessary might save you a substantial amount of time and money by extending the life of your transmission.

When to Change Your Transmission Fluid

When you need to replace your transmission fluid depends on the type of transmission you have, the type of car you drive, where you drive, how you drive, and how much you drive. For an automatic transmission, however, you should change the fluid every 50,000 to 100,000 kilometers. However, 100,000 kilometers is outside the permitted range. The Automatic Transmission Rebuilders Association recommended servicing the transmission every 50,000 kilometers or every two years.

For manual transmissions, the fluid should be changed every 50,000 to 90,000 kilometers; however, under heavy use, some manufacturers recommend replacing it every 25,000 kilometers. The difference between automatic and manual gearboxes is due to the fact that they require different fluids. The fluid used in automatic transmissions is called automatic transmission fluid. It is a bit more complex for manuals. They may accept a variety of lubricants, including conventional motor oil, heavyweight hypoid gear oil, and, in rare instances, automatic transmission fluid. Your transmission's owner's handbook will tell you which fluid is optimal.


Many current cars lack a transmission fluid dipstick, and manufactures recommend having a service shop check the fluid level because this is often done from underneath the vehicle. If you require transmission servicing, please bring your car to Crompton's Auto Care as soon as possible.

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