Q
does motor oil go bad sitting in an engine
I'm a seasoned industrial engineer with a keen interest in machine learning. Here to share insights on latest industry trends.
Yes, motor oil can degrade even when sitting in an engine unused. Over time, oil can undergo oxidation, which leads to increased viscosity, acidity, and the formation of sludge. Moisture can also accumulate, contributing to corrosion inside the engine. While it doesn't "expire" like perishable goods, its protective qualities diminish. It's recommended to change the oil at least once a year, regardless of mileage, to ensure engine health. This practice helps prevent potential damage and maintains the lubricating and cooling functions of the oil, prolonging engine life. Always refer to your vehicle’s manual for specific maintenance advice.
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