How often should the transmission fluid be changed?

[StDaisy]

Transmission fluid should be changed every two years or every 40,000 kilometers, but the specific interval depends on the vehicle model. Different models have different requirements. Taking Japanese models as an example, it is recommended to change the fluid every 40,000 to 60,000 kilometers. For vehicles that frequently drive at high speeds, it is advisable to change the fluid approximately every 40,000 kilometers. Transmission fluid is used in automobile transmissions to clean and lubricate the gear system, extend the life of the transmission components, and provide functions such as cleaning, lubrication, rust prevention, and heat dissipation. Depending on the type of transmission, transmission fluid can be divided into manual transmission fluid and automatic transmission fluid. A manual transmission mainly consists of gears and shafts, while an automatic transmission (AT) is composed of a torque converter, planetary gears, a hydraulic torque variation system, and a hydraulic control system.