My 300SD's paint has seen better days. When I first bought it I figured I would have to repaint it. I was actually able to restore the finish to an acceptable finish by using a colored wax product. Colored waxes really only work on black cars. When I wax the 300SD I do it in several layers allowing the wax to rest a day in between. I start with a cleaner wax then do the colored wax and then move onto a high gloss glaze product. The black wax eliminates a lot of the scratches and chips in the paints surface. I think my car looks pretty good for a 24 year old car. While black cars are a bit of a pain for swirl marks they are great for hiding scratches and chips.

http://beostar.paunix.org/newmbzpics