Does the BMW 740 engine burn oil?
1 Answers
BMW 740 engine does not burn oil. Causes of oil burning: When the car temperature has not fully warmed up, the engine exhaust pipe emits a lot of blue smoke, but it returns to normal after the car warms up. This phenomenon is caused by aging valve stem seals. If the exhaust pipe continues to emit blue smoke after the car reaches normal operating temperature, it indicates poor sealing of the piston rings. Preventive measures for oil burning: Use high-quality engine oil: Engine oil is highly susceptible to corrosion and aging under prolonged high-temperature conditions, causing the oil film to thin and making it easier to enter the combustion chamber and participate in combustion. Therefore, using high-quality engine oil can significantly delay this phenomenon. Maintain fuel system cleanliness: Fuel inevitably produces carbon deposits during combustion, and carbon deposits are the root cause of various car issues, such as aging valve stem seals and increased piston-cylinder wall clearance.