Is it harmful to add too much engine oil?

1 Answers
ValeriaAnn
07/29/25 6:34pm
Adding too much engine oil is harmful. Excessive engine oil can damage the three-way catalytic converter and may prevent the engine from receiving adequate lubrication. Engine oil, motor oil, or engine lubricant is a substance enhanced with additives in base oil, primarily containing anti-wear additives, detergents, dispersants, and multi-grade oil viscosity index improvers. The main functions of engine oil are to reduce friction and wear on moving parts, remove sludge and varnish from the engine, neutralize acids produced from fuel and lubricant oxidation (detergents), improve the sealing of piston rings, and cool the engine by carrying away heat from moving parts.
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