I extract my boat oil and I tell you it aint as good as dropping the plug. I like to let it all drain so maybe I will extract most and then drop the plug. What a bunch of idiots at MB on this one. It is not as though there is no room under there. Almost as bad as that damn plastic skirt that is held in with 15 screws on the others. At least with extracting you don't need a lift or have to lay on the floor.