What Causes Mercedes-Benz to Leak Engine Oil?
2 Answers
Mercedes-Benz leaks engine oil due to the following reasons: 1. Aging or damage to the oil pan gasket; 2. Aging or damage to the gear cover; 3. Loose or damaged drain plug; 4. Poor sealing of the valve cover gasket; 5. Leakage from the front and rear crankshaft oil seals; 6. Poor sealing of the radiator gasket; 7. Poor sealing or aging of the oil filter base gasket. Mercedes-Benz is a German brand, and its models include: Mercedes-Benz E-Class, S-Class, G-Class, GLC, GLS, GLE, etc. Taking the Mercedes-Benz GLC as an example, its body structure is a 5-door, 5-seat SUV, with body dimensions of: length 4729mm, width 1890mm, height 1602mm, a wheelbase of 2873mm, and a fuel tank capacity of 66 liters.
I've repaired many Mercedes-Benz vehicles before. The most common oil leakage issue occurs due to aging and cracking of the oil pan gasket, where prolonged use causes the rubber to harden and create gaps. The crankshaft front and rear oil seals are also prone to wear, especially in high-mileage vehicles or after aggressive driving. Another problem is the valve cover gasket failing to seal properly, allowing oil to seep out and drip onto the ground. Additionally, oil filter leaks can happen if it's not tightened properly during replacement or if low-quality parts are used. I often remind owners not to underestimate these issues, as severe oil leaks can lead to engine oil starvation, overheating, or even complete engine failure. It's advisable to regularly inspect the underside of the engine compartment and look for oil stains on the ground after parking – early detection can save costly repairs. Stick to scheduled maintenance and use genuine OEM sealing components for better durability. Never delay repairs, as Mercedes repairs can be quite expensive.
