What are the effects of overfilling engine oil?
2 Answers
The effects of overfilling engine oil are: 1. Intense agitation between engine components, leading to excessive engine load and power loss; 2. Oil splashing onto cylinder walls and entering the intake system through the crankcase ventilation system, causing oil burning issues. The method for changing engine oil is: 1. Lift the vehicle with a jack, locate and loosen the drain plug to drain the oil; 2. Remove the oil filter and place a container beneath it; 3. Install a new oil filter and add fresh oil. The functions of engine oil are: 1. Reduce friction and high temperatures; 2. Cool down the engine; 3. Clean and remove contaminants; 4. Dampen vibrations; 5. Prevent rust and corrosion.
Once when I changed the engine oil for my car, I accidentally overfilled it a bit. As a result, while driving, the engine sounded like it was roaring loudly, and fuel consumption increased noticeably. I consulted a mechanic, who explained that too much oil causes the crankshaft to churn the oil at high speeds, creating foam that reduces lubrication and accelerates wear on internal components. Additionally, increased oil pressure might damage seals, leading to leaks, and prolonged overfilling can significantly shorten the engine's lifespan. I quickly drained some oil through the oil pan screw to restore normal levels. This experience taught me to carefully check the dipstick markings when adding oil, ensuring not to exceed the maximum level—especially in summer when temperatures rise quickly, making the effects more pronounced. Regular oil level checks can prevent small mistakes from turning into big problems.
