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What Are the Causes of Engine Oil Reduction?

1 Answers

DeEllie

07/30/25 12:03am

Mechanical leaks, PVC valve damage, and oil burning are the main causes of engine oil reduction. Below are detailed explanations of these causes: Mechanical Leakage: Oil leaks can lead to irregular reductions in engine oil. Common locations for oil leaks include the valve cover gasket, camshaft oil seal, and rear crankshaft oil seal. PVC Valve Damage: When the high-temperature vapor pressure in the crankcase builds up, the PVC valve opens, allowing excessive oil vapor to pass through the oil separator. Some of this vapor enters the intake manifold and re-enters the cylinders for combustion. However, if the PVC valve is damaged, oil vapor will continuously enter the cylinders, effectively causing the oil to burn in another form. Oil Burning: Poor maintenance or frequent use of non-standard engine oil can lead to engine oil burning.

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Where is the battery located in a Mercedes-Benz car?

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