1995 Buick Riviera Owner's Manual - Page 259

Finish Care Occasional waxingor mild polishing of your Buickby hand may be necessaryto remove residue from the paint finish. You can get GM approved cleaning products from your dealer. (See"Appearance Care and Maintenance Materials" in the Index.) Exterior painted surfaces are subject to aging, weather and chemicalfallout that can taketheir toll over a period of years. You can helpto keep the paint finish looking new by keepingyour Buick garagedor covered whenever possible. Aluminum Wheels Your aluminum wheels have a protective coating similar to the painted surface of your vehicle. Don't use strong soaps, chemicals, chrome polish, abrasive cleaners or abrasive cleaning brushes them because you could on damage this coating. After rinsing thoroughly, a wax may be applied. Your Buick has a "basecoatlclearcoat" paint finish. The clearcoat gives moredepth and gloss to the colored basecoat. Always use waxes andpolishes that are non-abrasive and made for a basecoatklearcoat paint finish. I NOTICE: Machine compoundingor aggressive polishing on a basecoatklearcoat paint finish may dull the finish or leave swirl marks. Foreign materials such as calcium chloride and other salts, ice melting agents, roadoil and tar, tree sap, bird droppings, chemicals from industrial chimneys, etc. can damage your vehicle'sfinish if they remain on painted surfaces. Wash the vehicle as soonas possible. If necessary, use non-abrasivecleaners that are marked safe forpainted surfaces to remove foreign matter. NOTICE: Don't use an automatic car wash that has hard silicon carbide cleaning brushes. These brushes can take the protective coating your off aluminum wheels.