Black plate (111,1)Cadillac STS Owner Manual - 2011If necessary, use non-abrasive cleaners that aremarked safe for painted surfaces to remove foreignmatter.Exterior painted surfaces are subject to aging, weatherand chemical fallout that can take their toll over a periodof years. To help keep the paint finish looking new, keepthe vehicle garaged or covered whenever possible.Protecting Exterior Bright Metal PartsBright metal parts should be cleaned regularly to keeptheir luster. Washing with water is all that is usuallyneeded. However, chrome polish may be used onchrome or stainless steel trim, if necessary.Use special care with aluminum trim. To avoiddamaging protective trim, never use auto or chromepolish, steam or caustic soap to clean aluminum.A coating of wax, rubbed to high polish, isrecommended for all bright metal parts.Windshield and Wiper BladesClean the outside of the windshield with glass cleaner.Clean the rubber blades using a lint free cloth or papertowel soaked with windshield washer fluid or a milddetergent. Wash the windshield thoroughly whencleaning the blades. Bugs, road grime, sap, and abuildup of vehicle wash/wax treatments may causewiper streaking. Replace the wiper blades if they areworn or damaged.Wipers can be damaged by:. Extreme dusty conditions. Sand and salt. Heat and sun. Snow and ice, without proper removal6-111