1998 Cadillac DeVille Owner's Manual - Page 339

Cleaning Glass Surfaces Glass should be cleaned often. Glass Cleaner(GM GM P r No. 1050427) or a liquid household glass cleaner at will remove normal tobacco smoke and dust films on interior glass. Don't use abrasive cleaners on glass, because they may cause scratches. Avoid placing decals on inside rear the window, since they may have to be scraped off later. If on abrasive cleaners are used the inside of the rear window, an electric defogger element may be damaged. Any temporary license should not be attached across the defogger'grid. Grime from the windshield will stick to the wiper blades and affect their performance. Clean the blade by wiping vigorously with a cloth soaked in full-strength windshield washer solvent. Then rinse the blade with water. Check the wiper blades and clean them as necessary; replace blades that look worn. Weatherstrips Silicone greaseon weatherstrips will make them last longer, seal better, and not stick or squeak. Apply silicone grease with a clean cloth at least every six months. During very cold, damp weather more frequent application may be required. (See "Recommended Fluids and Lubricants" in the Maintenance Schedule booklet.) Cleaning the Outsideof the Windshield and Wiper Blades If the windshield is not clear after using the if windshield washer, or the wiper blade chatters when running, wax, sap other material may' be or on the blade or windshield. Cleaning the Outsideof Your Vehicle The paint finish on your vehicle provides beauty, depth of color, gloss retention and durability. Washing Your Vehicle Clean the outside of the windshield withGM Windshield Cleaner, Bon Ami@ Powder (non-scratching The best way to preserve your vehicle's finish is to keep it clean by washingit often with lukewarm or cold water. GM a t glass cleaning powder), P r No. 1050011. The you windshield is clean if beads do not form when rinse it with water. 6-52