Mercedes-Benz S63 AMG oil leak issue after rear main seal replacement on Mercedes-Benz S63 AMG

Some Mercedes-Benz S63 AMG owners report experiencing oil leaks even after a rear main seal replacement, which can stem from various common leak locations such as the oil separator, engine gaskets, and the rear main seal itself. These issues may arise if the rear main seal is not properly installed, leading to continued leaks. Additionally, some owners find that oil leaks can occur near the valve gasket covers, camshaft solenoid cover gaskets, and oil filter housing gaskets, particularly in models with the M156 engine. To mitigate these concerns, it is advisable for owners to change the valve cover gasket, clean affected components, and re-inspect the vehicle after a few weeks. If oil leaks persist, seeking a professional mechanic's inspection is recommended to accurately identify and resolve the source of the leak, ensuring optimal vehicle performance.