Hello, if you are trying to find a source of oil leak in a W124 M103 engine, where would you look first? If I park my 1987 260E at a new parking spot at night and come back in the morning, there is a small puddle, about the size of a person's palm right under where the front of the oil pan would be. It appears to have dripped there from somewhere above the oil pan. So far I have not been able to pinpoint it.