get some Mitric(i think it is) Acid mix it about 24 parts water 1 part acid. itll make stuff shine up real nice, make sure to get some dish washing gloves or somethin, and dont plan on using the rag for anything else, just rub it on, and spray it off real good. Ive done my bumpers once and my wheel twice. After I use it I go back over it with mothers chrome polish for a real nice finish /forums/images/graemlins/thumb.gif