I'll start out by little introduction. I am the new owner of a 1992 300E 4-Matic and this is my first post on the forum. Along with that came the problems I bought it with. The oil in the engine seemd a lil diluted and creamy as if there there was coolant mixed in there. I am thinking it should be the head gasket that needs to be replaced. The guy I bought it from said it needs a new water pump. For some reason I doubt that. Is there anyway to check and be certain? The car has 181k on it but is in really good condition. Any tips on how to change the head gasket? Also could this be something else? I appreciate any feedback. Thank You.