What are the effects of overfilling engine oil and how to solve it?
2 Answers
Here is an introduction to the effects of overfilling engine oil and the solutions: 1. Effects: (1) Decreased vehicle power; (2) Increased fuel consumption; (3) Severe damage to the three-way catalytic converter; (4) Accelerated aging of vehicle components. 2. The solution for overfilled engine oil is: Pull out the engine oil dipstick. There is a MIN and MAX mark on the dipstick, representing the lower and upper limits of the oil level. If the oil level is below the MIN mark, add oil; if it is above the MAX mark, do not add oil and instead remove the excess oil. Engine oil is a substance enhanced with additives in base oil, primarily containing anti-wear additives, detergents, dispersants, and multi-grade viscosity index improvers.
Last time during an engine oil change, I accidentally overfilled it. After driving, the engine sounded muffled, had poor acceleration, and emitted blue smoke. Checking the dipstick showed oil level above the MAX mark. Excess oil increases internal pressure, which can damage oil seals and gaskets causing leaks. In severe cases, crankshaft agitation creates foam that reduces lubrication, accelerates component wear, and increases fuel consumption. I carefully used an oil extractor to remove the excess, bringing it below the MAX line – now the engine runs smoothly. Always measure oil levels accurately on level ground before refilling. Prevention is simple: add oil gradually while checking the dipstick during changes, and inspect levels every 5,000 km. This avoids costly repairs and prevents environmental contamination from leaks.
