Why is it necessary to change transmission oil regularly?

1 Answers
Gracie
07/29/25 12:40am
Regularly changing transmission oil serves to ensure the proper functioning of the transmission and extend the lifespan of the transmission system. An automatic transmission is a highly precise assembly with a complex structure. Changing the transmission oil every 40,000 kilometers is an effective method to maintain its normal operation. There are two methods for changing automatic transmission oil: 1. Gravity drain method, which achieves a 40% oil replacement rate. The principle is similar to changing engine oil. Typically, a transmission with an 8-liter capacity can only have 3 to 4 liters replaced this way. 2. Dynamic oil exchange method using a machine, which uses pressure to replace the oil in the torque converter lubrication pipe and cooling pipe completely. This method requires twice the actual capacity of the transmission in oil.
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