Why Does an Engine Burn Oil?

Engine oil is used to reduce friction between mechanisms, balance temperature, clean engine parts, and prevent wear. These oils have a certain usage period and mileage lifespan. During this period, the oil´s viscosity values and functionality undergo changes, leading to oil burning in the engine. Among the most important causes of engine oil burning are worn cylinder walls and rings. Wear on the cylinder walls or rings losing their functionality causes oil to leak into the combustion chamber, leading to engine oil burning. Another cause is engine overheating. This overheating can thin the oil, allowing it to enter the combustion chamber. Overheating typically results from cooling system issues. Low-quality or improperly rated motor oils in terms of viscosity are also among the causes leading to oil burning problems.

One of the first signs that a vehicle owner notices among the indicators of an engine burning oil is the emission of blue-gray smoke from the exhaust. Another sign is the engine oil level dropping faster than expected. To prevent the engine from burning oil, it is important to have regular vehicle maintenance. Regular maintenance of the engine largely prevents oil burning problems. Special attention should be paid to oil change intervals. Using oil that is suitable in quality and viscosity, checking the cooling system and thermostat to prevent the engine from overheating, and using high-quality engine oil as recommended by the manufacturer will help minimize oil burning issues.