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Is Gear Oil the Same as Transmission Fluid?

1 Answers

VanRicardo

09/06/25 3:50am

Transmission fluid and gear oil are generally the same, with corresponding specifications used depending on the vehicle model. For manual transmission vehicles, it is mainly used for gear lubrication, while for automatic transmission vehicles, it is primarily used for transmission lubrication and power transfer. Hazards of not replacing transmission fluid: 1. Damage to the transmission's shift control mechanism; 2. Abnormal wear of gears and clutch plates inside the transmission; 3. Affects the normal operation of the transmission, leading to damage to the transmission valve body. Transmission fluid and engine oil are not the same. Although both oils serve a lubricating function, their specific roles differ and should not be confused. Differences: Engine oil is a lubricant for the engine system, possessing properties such as oxidation resistance, wear resistance, and corrosion prevention. Transmission fluid, on the other hand, is mainly used to keep the gear system clean and can extend the service life of internal transmission components. Due to the different structures and operating environments of transmissions and engines, transmission fluid cannot be used as engine oil, nor can engine oil be used as transmission fluid.

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