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How often should the transmission fluid of a heavy truck be changed?

1 Answers

EmilianoLynn

07/30/25 7:33am

It is generally recommended to change the transmission fluid after driving approximately 60,000 kilometers. Different brands of heavy trucks have varying transmission structures and configurations, so the manufacturer knows their own brand's transmission best. Below is some relevant information: 1. Importance of transmission fluid: Effectively reduces gear wear and extends lifespan; minimizes friction and improves power output; disperses heat, providing a cooling effect; prevents rust or corrosion of components; reduces noise and vibration; cleans dirt between gear surfaces, reducing wear. 2. Precautions for changing transmission fluid: Different types of transmission fluid should not be mixed, as the original transmission fluid is tested and should be the most suitable for the vehicle's transmission; if switching to another brand of transmission fluid, it is difficult to completely clean the existing fluid due to its high viscosity, and mixing fluids can affect transmission performance or even lead to performance degradation.

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