by Dan Chambers on Thu Oct 19, 2006 5:54 pm
A little patience, some serious effort, and Simple Green works well.
Also, the citrus based degreasers, like the ones from Costco work on the stone guards, too. Finally, Primsol, a cleaner used before painting a car, works well, and takes slightly ... and I mean very slightly ....... less elbow grease (oooh, bad expression..) er, effort. You can get Primsol where automotive paints are sold.
Be careful! Do a test patch on an inobvious place just in case. Silver is one of those colors (like white) that shows "shadowing."
Regardless of what you use (I personally like scratch removers like Scratch-X by Maguiars), you will need to re-wax the area you cleaned. All those "cleaners" strip the wax off before the black mark goes away.
Good luck!
Dan Chambers"It's
just a "well prepared" street car ... or a very, very well-mannered track car."

1983 SC #91 3.6L, "Black Pearl" Livery
1987 944 (gone but not forgotten)