There is nothing to clean. The paint appears to dissolve from finger oils and when you try to remove the gunk the paint is removed too. Not to hijack this thread but it seems to be a quality issue with this supplier and the supplier of certain rubber parts like the roof rack pads (wagon-PITA to replace), windshield trim panels beneath the windshield wipers, and teleaid/gps antenna. My question is whether the replacement parts are of the same crap quality?

I guess we should consider ourselves lucky because the same era BMW's around here are exhibiting worse rubber degradation. As I have asked before, "Didn't the Germans invent synthetic rubber?" Why is this happening to our late model MB's? Mark