Originally Posted by RUSTY

Unfortunately it is some years ago, but the issue made me recall, that it was a test in co-operation with Shell, probably to get some promotion for their carwash. (In Denmark we only have carwash in combination with a gas station).

I have found another and more recent article about the subject from FDM, and now they say it is OK to handwash if you use lots of water.

And they say that the advantage by handwash is, that you see all damages, spots and scratches on the surface! I find that part very depressing!