How Often Should Transmission Fluid Be Changed in a Private Car?

[JasmineFitz]

For manual transmissions, it is recommended to change the transmission fluid every 3 years or 50,000 kilometers. For ATF transmissions, the recommendation is every 3 years or 60,000 kilometers. CVT and DSG dual-clutch transmissions should have their fluid changed every 4 years or 80,000 kilometers. Additional relevant information is as follows: 1. Consequences of not changing transmission fluid for a long time: The fluid becomes thinner, leading to decreased lubrication performance, reduced sealing performance, increased resistance, and greater wear. This manifests as gear shifting jerks and a decline in smoothness. Under high-temperature operation, it can easily cause wear on the clutch plates, resulting in a "stall" phenomenon. Over time, it can also cause the antioxidant effectiveness in automatic transmissions to decline, leading to component corrosion. 2. Principle of fluid change: Using a circulation machine for fluid change is more labor-intensive and expensive. The principle involves connecting the circulation machine to the transmission's fluid circuit interface, adding new fluid into the machine, and using the new fluid to "push" out the old fluid from the transmission. This method requires about 12 liters or even more transmission fluid, but it allows for a more thorough replacement of the fluid and offers higher cleaning effectiveness.