1993 Buick Park Avenue Owner's Manual - Page 285

Aluminum Wheels (If So Equipped) Your aluminum wheels have a protective coating similar to the painted surface of your car. Don't use strong soaps, chemicals, chrome polish, or other abrasive cleaners on them because you could damage this coating. After rinsing thoroughly, a wax may be applied. Sheet Metal Damage If your vehicle is damaged and requires sheet metal repair or replacement, make sure the body repair shop applies anti-corrosionmaterial to the parts repaired or replaced to restorecorrosion protection. I NOTICE: If you have aluminum wheels, don't an use automatic vehicle wash that has silicon hard carbide cleaning brushes. These brushes can take off the protective coating. Foreign Material Calcium chloride and other salts, ice melting agents, road oil and tar, tree sap, bird droppings, chemicalsfrom industrial chimneys, and other foreign matter can damage your vehicle's finish if they remain on painted surfaces. Use cleaners that are marked safe for painted surfaces for thesestains. White Sidewall Tires Your Buick dealer has a GM White Sidewall Tire Cleaner. You can use a stiff brush with it. Finish Damage Any stone chips, fractures or deep scratches the finish in should be repaired right away. Bare metal will corrode quickly and may develop into a major repair expense. Minor chips and scratches can be repaired with touch-up materials available from your dealer or other service outlets. Larger areas of finish damage can be corrected in your dealer's body and paint shop. Weatherstrips These areplaces where glass or metal meets rubber. Silicone grease therewill make them last longer, seal better, and not stick or squeak.Apply silicone grease with a clean cloth at least every six months.