1999 Lincoln Navigator Owner Guide 1st Printing - Page 194

Maintenance and care Remove particles such as bird droppings, tree sap, insect remains, tar spots, road salt and industrial fallout immediately. Cleaning the wheels Wash with the same detergent as the body of your vehicle. Do not use acid-based or alcohol-based wheel cleaners, steel wool, fuel or strong detergents. Never use abrasives that will damage the finish of special wheel surfaces. Use a tar remover to remove grease and tar. Underbody Flush the complete underside of vehicle frequently. Keep body drain holes unplugged. Inspect for road damage. Cleaning the engine Engines are more efficient when they are clean because grease and dirt buildup keep the engine warmer than normal. When washing: • Take care when using a power washer to clean the engine. The high pressure fluid could penetrate the sealed parts and cause damage. • Do not spray with cold water to avoid cracking the engine block or other engine components. • Cover the highlighted areas to prevent water damage when cleaning the engine. • Never wash or rinse the engine while it is running; water in the running engine may cause internal damage. 194