Mercedes-Benz C250 engine oil leak from oil filter housing on Mercedes-Benz C250

Some Mercedes-Benz C250 owners report experiencing engine oil leaks from the oil filter housing, primarily due to issues with the oil filter housing seal and oil cooler seals. These leaks may necessitate careful consideration of whether to replace just the seals or the entire oil cooler and housing. In some instances, simply replacing the sealing ring does not resolve the problem, as improper installation can lead to ongoing leaks. Mercedes-Benz service departments sometimes recommend a full replacement of the oil filter housing rather than just the seals. Owners may notice oil leaking on the left side of the engine, which can cause a burning smell and smoke from oil dripping onto the manifold. After any repair, it is crucial to perform tests, including engine run tests and road tests, to confirm the success of the repair and ensure there are no remaining oil leaks. Addressing these issues promptly is essential to prevent further complications and maintain the vehicle's performance.