So the used car dealer that sold me my car, covered the first oil change, at a shop next to his lot. Had I not been standing there, the mechanic was just going to put whatever oil in. I showed him my owners manual, and he had to make two calls, one to a local parts supplier, and another to somebody else??? I even told them it used a special synthetic since it was a mercedes motor, so they had the right stuff on hand. I get there and almost get 5w30! guess I wont step foot in that garage again. chris