What Causes Engine Oil Burning in Car Engines?

[AbigailAnn]

Engine oil burning in car engines is caused by: 1. Oil burning when the engine is cold, which may be due to corroded or aged valve seals, resulting in poor sealing and allowing oil to leak into the combustion chamber from the valves, leading to the aforementioned phenomenon; 2. Oil burning when the engine is hot, usually caused by issues with the piston rings. As the car's mileage increases, wear between the piston and cylinder gradually intensifies, causing cylinder blow-by to start, which in turn leads to oil burning; 3. Failure to perform regular maintenance as required, exceeding the recommended mileage without timely engine maintenance, resulting in excessively dirty oil. The impurities in the oil accelerate cylinder wear; 4. Improper selection of air filters, oil filters, or engine oil, preventing proper purification of gas impurities entering the cylinders. Various dust particles enter the cylinders, accelerating cylinder wear.