Do the Engine and Transmission Use the Same Oil?

1 Answers
JoyLynn
07/30/25 7:34am
Engines and transmissions do not use the same oil. The engine uses engine oil, while the transmission uses transmission fluid. Engine oil is the lubricant for the engine system, possessing properties such as oxidation resistance, wear resistance, and anti-corrosion. On the other hand, transmission fluid primarily serves to keep the gear system clean and extends the service life of internal transmission components. Due to the differences in structure and operating environments between the transmission and the engine, transmission fluid cannot be used as engine oil, nor can engine oil be used as transmission fluid. The engine has higher requirements for the oil's high-temperature resistance, oxidation resistance, and cleaning properties. Although the transmission operates at relatively lower temperatures, its internal components still require lubrication. Transmission fluid helps extend the lifespan of gears and offers low-temperature resistance.
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