Does the BMW X5 burn engine oil?
1 Answers
2020 model with a 3.0L displacement, equipped with the N52 engine, the BMW X5 has been continuously burning engine oil after traveling 240,000 kilometers, consuming approximately 1L per 1,000 kilometers. Generally, there are two main reasons for burning engine oil. Here are the detailed explanations: 1. Cylinder Block: (1) Excessive wear of the cylinder liner. When the cylinder liner is excessively worn, forming a "step" at the top dead center of the piston, engine oil can accumulate and participate in combustion. (2) Excessive wear of the piston or piston ring failure. When the cylinder liner wears unevenly, forming a tapered or oval shape, the engine oil carried up by the piston rings can accumulate and participate in combustion. When the piston is excessively worn or the piston rings lose elasticity after prolonged use, poor sealing allows excessive oil to enter the combustion chamber and participate in combustion, leading to oil burning. 2. Cylinder Head: Oil burning in the cylinder head occurs due to uneven wear of the valve guides creating gaps, allowing oil to leak into the combustion chamber, and/or aging of the valve stem seals, which reduces sealing effectiveness, causing oil to flow along the valve into the combustion chamber.