Hello, I’ve already tried to research, but I haven’t found exactly what it looks like. Much is written about rusty brown spots, but my spots are not rust brown (at least that’s what I would see). I’ve been getting the car roof and the bonnet since 2 handwashes. The spots remain on it just as before washing. You can see what I mean in the photos. Do I assume that I have to knead?! r it didn’t go away, just as little as with a mix of water+spüli drops… car is a VW Golf 7 Thanks a lot in advance