What Causes Engine Oil Burning When the Engine is Cold?

[AaliyahLynn]

Cold engine oil burning is caused by driving issues, fuel combustion problems, and wear. Below are the reasons for oil burning and their solutions: Driving Issues: Some oil burning is due to driving habits. Avoid aggressive driving, rapid acceleration, and sudden braking, as these can burn oil and damage the vehicle. Fuel Combustion Problems: When oil burning is mild, you can roughly determine the faulty part by observing the exhaust. If oil burning occurs when starting a cold engine, it is likely a valve seal issue. If it happens when the engine is hot, it is usually due to piston or piston ring problems. Wear Handling: In most cases, excessive wear between the piston and cylinder wall reduces sealing, allowing oil to enter the combustion chamber. Open the oil filler cap. If the crankcase pressure is negative, it is likely an issue with the PCV (positive crankcase ventilation) valve. If the PCV valve is faulty, replace it directly.