Which Cars Burn Engine Oil?

[Richardson]

Volvo, Audi, BMW, Subaru, and Volkswagen brand cars may experience engine oil burning. Here are the specific reasons for engine oil burning: Worn Valve Seals: Valves are designed to prevent oil from leaking into the combustion chamber. However, over time, they can wear out or age. Severe wear can affect the sealing performance of the valves, making it easy for oil to burn. Excessive Piston Clearance: When a car is used for an extended period, carbon deposits from incomplete combustion can accumulate on the piston rings. If not cleaned for a long time, this can enlarge the gap between the piston rings and the cylinder wall, allowing oil to enter the combustion chamber and cause oil burning. In severe cases, it can even lead to engine seizure. Driving Habits: Frequent rapid acceleration and prolonged high-speed driving can damage the lubricating oil film, leading to poor engine lubrication and wear on certain components. This also increases the likelihood of oil burning. Excessive Oil Level: If the engine oil level is too high and exceeds the maximum mark, the excess oil can easily enter the combustion chamber (due to excessive internal pressure) and form gummy carbon deposits.