Does adding more engine oil have any impact?
3 Answers
Adding more engine oil does have an impact, as it can reduce the engine's output power. The following are specific hazards of excessive engine oil: 1. Reduced engine lifespan: When the oil level is too high, the oil becomes diluted, leading to a decrease in viscosity. This results in insufficient lubrication and cooling capabilities, causing cylinder scuffing, bearing wear, and affecting normal engine operation. In severe cases, it can shorten the engine's lifespan. 2. Increased carbon deposits in the combustion chamber: 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 cause the catalytic converter to fail, rapid damage to the oxygen sensor, increased carbon deposits in the combustion chamber, unstable idle, poor acceleration, increased fuel consumption, and excessive exhaust emissions.
As an enthusiast who frequently deals with cars, I’ve found that adding too much engine oil can indeed cause problems. If the oil level exceeds the upper mark on the dipstick, the oil may foam, reducing its lubrication effectiveness and increasing friction between internal engine components. This can lead to higher fuel consumption, reduced power, and a noticeable lack of performance. In severe cases, it might even damage the crankcase or bearings, resulting in costly and time-consuming repairs. The correct practice is to let the car cool down before each maintenance check, then use the dipstick to ensure the oil level stays within the middle marked range. If you accidentally overfill, promptly use an oil pump to remove the excess. Additionally, regular maintenance is crucial—it helps prevent such minor mistakes. In short, don’t overdo it; the right amount is best.
Once when I was driving my own car, the gas station attendant was a bit heavy-handed with the engine oil refill, resulting in abnormal engine noises and increased fuel consumption while driving. Later, a visit to the repair shop revealed that the excess oil had foamed up, affecting lubrication. Since then, I always carefully check the dipstick level before adding oil to ensure it doesn't exceed the limit. A friend's car also encountered a similar situation—adding too much oil does no good and only causes trouble. I suggest you develop the habit of checking the oil level after parking to avoid affecting your daily driving experience.
