How often should the transmission oil of a small car be changed?

1 Answers
FinnDella
07/29/25 5:58pm
Small car transmission oil should be changed every 40,000 kilometers. Below is additional information: 1. Cooling function of the transmission: The interaction between gears generates a significant amount of heat, which requires lubrication oil for cooling. 2. Lubrication function of the transmission: Ensures smoother gear engagement. 3. Cleaning function of the transmission: Maintains the cleanliness of the gear system and extends the lifespan of the transmission components. The transmission mainly refers to the car's gearbox, which is divided into manual and automatic types. Manual transmissions primarily consist of gears and shafts, achieving speed and torque variations through different gear combinations. Automatic transmissions (AT) are composed of a torque converter, planetary gears, and a hydraulic control system, achieving speed and torque variations through hydraulic transmission and gear combinations.
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