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Does Motor Oil Turn Acidic with Age?
Does Mobil 1™ become acidic over time? Does normal motor oil become acidic over time?
-- Michael Weekley, Saucier, MS
All engine oils become acidic over time by absorbing the natural by-products of the combustion and oxidation processes in your engine. The key to outstanding engine oils is their ability to neutralize these harmful acids to provide long-term protection to critical engine parts. Mobil 1 is formulated with selected detergents to maximize the oil’s ability to combat acid buildup and extend the longevity of the oil in your engine.