Another question I didn’t find an answer to anywhere! When I cleaned my rear window, and then I drove about 100km, I see in the rear-view mirror that the window starts to fog again! Doesn’t seem to me as if something was leaking on the cooling water system and that therefore occurs, but rather of the nature like a light oil film that wets the window… Maybe I never paid attention to it that this never really happened to me. Is that more normal, since the engine is just under the disc, or could it possibly be something in the wrong? Have the engine panels been broken down and looked at if there is something leaking and oil evaporates and thereby falls down on the disc! But is everything dry, at least what I can see from above! That one is egeal, which disc one has to clean every now and then is clear! Only just that the rear window in such a short time always scuffs… Rainer