What are the disadvantages of excessive engine oil?

1 Answers
LeBeckett
07/30/25 1:35am
Excessive engine oil can cause the following issues: 1. Increased engine power loss; 2. Oil may enter the combustion chamber; 3. Engine oil burning, resulting in blue smoke from exhaust emissions; 4. Significant increase in oil consumption; 5. Increased carbon deposits inside the engine. Engine oil, also known as 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, and to remove sludge and varnish from the engine. It also neutralizes acids produced from fuel and lubricant oxidation (detergents), improves the sealing of piston rings, and cools the engine by carrying away heat from moving parts.
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