Does the Turbocharger Burn Engine Oil?
2 Answers
Under normal circumstances, the turbocharger does not burn engine oil unless there is an oil leakage issue. Below are the criteria for determining oil burning and the main causes: Criteria for determining oil burning: The "Automotive Engine Performance Test Method" (GB19055/2003) states that during full-load operation at rated speed, the engine oil/fuel consumption ratio should not exceed 0.3%. Exceeding this value can be identified as oil burning. Main causes of oil burning: Poor cylinder sealing is the primary cause of oil burning. Poor cylinder sealing is mainly due to excessive clearance between the piston and cylinder wall, improper installation or poor sealing performance of piston rings, allowing oil from the cylinder wall to enter the combustion chamber, leading to oil combustion. Additionally, poor sealing performance of the valve seal, damage to the crankcase ventilation valve, or blockage of the crankcase exhaust port can cause excessive pressure in the crankcase, allowing oil to enter the cylinder along with crankcase gases and burn.
I've been driving turbocharged cars for over a decade and have encountered several instances of oil burning, which was really frustrating. Oil burning refers to excessive oil consumption, with the oil light on the dashboard frequently illuminated and blue smoke coming from the exhaust pipe. If the turbocharger malfunctions, it can indeed lead to oil burning, especially in older vehicles or those with poor maintenance. Inside the turbo, there are rotors and bearings, and the seals can wear out over time, allowing oil to leak into the exhaust system and burn. During my last inspection, the mechanic said replacing the seals would fix the issue, costing a few hundred bucks. This can affect fuel efficiency and engine health, so it's advisable to check the oil level regularly—once every month or two can prevent problems. Avoid aggressive acceleration in daily driving, as it increases turbo pressure and makes oil burning more likely. Remember, keeping the vehicle clean and sticking to scheduled maintenance is key to prolonging your car's lifespan and saving both hassle and money.
