1998 Buick Regal Owner's Manual - Page 320

High pressure car washes may cause water to enter your vehicle. Cleaning Exterior LampsLenses Use lukewarmor cold water, a soft cloth and a liquid hand, dish or washing (mild detergent) soap to clean car exterior lamps and lenses. Follow instructions under ''Washing Your Vehicle." NOTICE: Machine compounding or aggressive polishing on a basecoatklearcoat paint finish may ddl the finish or leave swirl marks. Foreign materials such as calcium chloride and other Finish Care i salts, ice melting agents, roado l and tar, tree sap, bird droppings, chemicalsfrom industrial chimneys, etc., can Occasional waxing or mild polishing your vehicle by of hand maybe necessary to remove residue from the paint damage your vehicle's finish if they remain on painted surfaces. Wash the vehicleas soon as possible.If finish. You can get GM-approved cleaning products necessary, use non-abrasive cleaners that are marked from your dealer. (See "Appearance Care and Materials" safe for painted surfaces to remove foreign matter. in the Index.) Exterior painted surfaces are subject to aging, weather Your vehicle has a "basecoatlclearcoat" paint finish. The and chemical fallout that can take their over a period toll clearcoat gives more depth and gloss tocolored the of years. You can help to keep paint finish loolring the basecoat. Always use waxes and polishes that are new by keeping your vehicle garaged or covered non-abrasive and made a basecoatklearcoat for whenever possible. paint finish. 6-56