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Is Engine Oil the Same as Gear Oil?

1Answers
OEmerson
07/23/2025, 04:05:59 PM

Gear oil is not engine oil. Gear oil, also known as transmission oil, is used in automotive transmissions. It is primarily composed of petroleum-based lubricating oil or synthetic lubricating oil, blended with extreme pressure anti-wear agents and oiliness agents to form a transmission lubricant. It is used to lubricate various gears in transmissions, reducers, and differentials to prevent gear surface wear, scuffing, sintering, etc., thereby extending service life and improving power transmission efficiency. Below is relevant information about engine oil: Engine oil is used in automotive engines and is a type of engine lubricant composed of base oil and additives. Depending on the base oil, it is classified into semi-synthetic oil, fully synthetic oil, and mineral oil. Inside the engine, it performs functions such as cleaning, lubricating, and cooling components. It operates in high-temperature and high-pressure environments for extended periods, requiring high oxidation resistance and stronger shear resistance.

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