1993 Oldsmobile 88 Owner's Manual - Page 261

Service & Appearance Care Finish Care Occasional waxingor mild polishing of your Oldsmobile may be necessary to remove residue from the paint finish. You can get GM approved cleaning products from your dealer.(Seethe Index under Appearance Care.) Your Oldsmobile has a "basecoat/ clearcoat" paint finish. The clearcoat gives more depth and gloss to the colored basecoat. Aluminum Wheels(IF SO EQUIPPED) White Sidewall Tires Your aluminum wheels have a protective Your Oldsmobile dealer has a GM coating similar to the painted surface of White Sidewall Tire Cleaner.You can use a stiff brush with it. your Oldsmobile. Don't use strong soaps, chemicals, chrome polish,or other abrasive cleaners on them becauseWeatherstrips you could damagethis coating. After These are places where glass metal or rinsing thoroughly, a wax maybe meets rubber. Silicone grease there will applied. make them last longer,seal better, and not squeak. Apply silicone grease witha clean cloth at least every months. six If you have aluminum wheels, don't use an automatic vehicle wash that has hard silicon carbide cleaning brushes. These brushes can takeoff the protective coating.