What are the causes of engine oil consumption?
1 Answers
The causes of engine oil consumption are as follows: 1. Poor sealing at the body joints, resulting in oil leakage from the lubrication system; in this case, various sealing gaskets or oil seals should be replaced according to the leakage location to ensure proper sealing. 2. Excessive oil level in the oil pan, where the surplus oil is carried into the combustion chamber and burned, leading to excessive oil consumption; in this case, the excess oil should be drained to keep the oil storage within the standard range. 3. Too much oil in the air filter, which, under hot engine conditions, can be easily carried into the cylinder by the high-speed air stream and burned, causing excessive oil consumption; in this case, the excess oil should be poured out. 4. Damaged, stuck, or broken piston rings, which fail to scrape oil effectively. Normally, the oil splashed by the rotating crankshaft to lubricate the cylinder walls is scraped back into the oil pan by the piston rings. When the piston rings are worn, stuck, or broken, their oil-scraping performance declines or fails, allowing oil to enter the combustion chamber and burn, leading to increased oil consumption. In this case, all piston rings should be replaced with new ones.