Engine oil and gear oil serve distinct purposes in a vehicle. Engine oil, also known as motor oil, is designed to lubricate and cool the moving parts within the engine, reducing friction and preventing wear and tear. It also helps to clean the engine by carrying away contaminants. On the other hand, gear oil is formulated specifically for transmissions, differentials, and transfer cases, providing lubrication to the gears and bearings. Gear oil is thicker and more viscous than engine oil to withstand these components’ higher pressures and temperatures. While both oils lubricate mechanical parts, their compositions and viscosity grades are tailored to the unique demands of the engine and transmission systems, making them unsuitable for interchangeability.
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