What Are the Hazards of Excessive Engine Oil?
2 Answers
Here are the specific hazards of excessive engine oil: 1. Increased engine oil dilutes the oil, leading to a decrease in viscosity. This reduces the oil's lubrication and cooling capabilities, potentially causing cylinder scuffing, bearing wear, and affecting normal engine operation. In severe cases, it may shorten the engine's lifespan. 2. When the oil level exceeds the upper limit on the dipstick, some oil may enter the combustion chamber and participate in combustion, leading to oil burning. This can result in catalytic converter failure, rapid damage to the vehicle's oxygen sensors, increased carbon deposits in the combustion chamber, unstable idling, poor acceleration, increased fuel consumption, and excessive exhaust emissions.
Oil dilution is a serious issue that can be dangerous. I've discussed similar situations with friends. When there's too much oil, the lubrication effect is significantly reduced, increasing friction between engine components and accelerating wear. Especially when oil is diluted by fuel, its fluidity deteriorates, and over time, it can clog oil passages, leading to engine overheating or complete failure. In severe cases, the engine may require a major overhaul, costing thousands to replace. Even worse, sudden engine stalling while driving can be extremely hazardous and prone to accidents. I believe car owners should develop the habit of regularly checking the oil dipstick. If abnormal oil level increases are noticed, don't delay—take it to a shop immediately. Mechanics often say prevention is better than cure; replacing poor-quality oil early can save a lot of money. In short, don't ignore oil dilution—safety first.
