Will Too Much Engine Oil Cause Leakage?

[MacChristopher]

Adding too much engine oil not only causes oil seal leakage but also harms the engine. 1. Normal situation: Generally, the oil dipstick has markings. Exceeding the upper limit slightly is acceptable, but exceeding it significantly is not. The excess oil must be drained; otherwise, excessive pressure may cause oil leakage. 2. Effects: Overfilling engine oil can lead to oil burning and black smoke emissions, negatively impacting the engine. Additionally, during engine operation, the crankshaft and connecting rod ends will vigorously agitate the oil, increasing internal power loss and causing more oil to splash onto the cylinder walls. This can lead to oil burning issues and accelerate carbon buildup in the combustion chamber. 3. Common issues with excess oil: Increased engine power loss, oil entering the combustion chamber, engine oil burning, blue smoke in exhaust emissions, significantly higher oil consumption, increased carbon deposits inside the engine, and even premature ignition, knocking, cylinder scuffing, or engine runaway, severely damaging the engine.