What are the symptoms of a car with excessive engine oil?
2 Answers
The symptoms of a car with excessive engine oil are: 1. Crankcase explosion; 2. Blue smoke from the engine exhaust pipe; 3. Piston ring sticking, fuel injector clogging; 4. Reduced engine power output; 5. Engine oil leakage. The functions of engine oil are: assisting engine lubrication and wear reduction, cooling and temperature reduction, sealing and leak prevention, rust and corrosion prevention, shock absorption and buffering. Engine oil can be selected based on usage conditions and divided into: 1. Diesel engine oil: chosen according to the total mechanical and thermal load of the car engine, and the severity of engine operating conditions; 2. Gasoline engine oil: selected based on the severity of engine operating conditions, additional devices in the car's intake and exhaust systems, and the production year.
Recently, my car also experienced an issue with excessive engine oil. The symptoms were that when checking the dipstick, the oil level was far above the normal upper limit—usually it should be at the midpoint, but now it's almost overflowing. The oil smells like gasoline, as if it's mixed with fuel. When driving, the engine feels sluggish, accelerating much slower than usual, and it's particularly strenuous when going uphill. Fuel consumption has also increased slightly, and the engine noise has become louder, with a constant annoying hum. This is especially noticeable during cold starts, and it gets worse in winter. Short trips that don't allow the engine to fully warm up can easily cause this. I immediately went to change the oil, and the mechanic said that if left unchecked for too long, internal engine wear would worsen, and it could also damage the seals. He recommended regularly checking the dipstick and addressing any abnormalities as soon as they're noticed.
