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Is Engine Oil the Same as Transmission Oil?

1 Answers
DelDavid
09/06/25 4:57am
Engine oil and transmission oil are not the same. Engine oil is the lubricating oil for the engine system, with certain properties such as oxidation resistance, anti-wear, and anti-corrosion. Transmission oil primarily maintains the cleanliness of the gear system, ensures the normal operation of the transmission, and extends the lifespan of the transmission components. It provides lubrication and cooling for the gear system. During vehicle operation, gears rotate at high speeds, generating heat through friction. This is where gear oil is needed to lubricate and reduce temperature, ensuring the vehicle operates smoothly. The main function of engine oil is to lubricate the engine system, providing lubrication, cooling, sealing, rust and corrosion prevention, as well as shock absorption. The condition of the engine oil can directly impact the performance and lifespan of the engine.
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