When Should the Car Transmission Fluid Be Replaced?

1 Answers
OHannah
07/29/25 2:39pm
For automatic transmission vehicles, the transmission fluid should be replaced every 2 years or every 40,000 kilometers, while for manual transmission vehicles, it should be replaced every 3 years or every 100,000 kilometers. The replacement of car transmission fluid is not based on a specific fixed value but depends on the driver's operating habits and the driving environment. Functions of car transmission fluid: 1. Cooling: The car transmission generates a large amount of heat during operation, and the transmission fluid ensures normal heat dissipation. 2. Lubrication: To ensure smooth gear shifting, abnormal or insufficient transmission fluid can cause issues that affect normal operation. 3. Maintaining cleanliness: Over long-term use, the car transmission will experience wear, and the transmission fluid helps clean the gear system, extending the service life of the transmission components.
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