2007 Cadillac STS Owner's Manual - Page 404

Windshield Washer Fluid What to Use When you need windshield washer fluid, be sure to read the manufacturer's instructions before use. If you will be operating your vehicle in an area where the temperature may fall below freezing, use a fluid that has sufficient protection against freezing. Adding Washer Fluid The CHECK WASHER FLUID message will appear on the Driver Information Center (DIC) when the fluid level is low. See DIC Warnings and Messages on page 264 for more information. Open the cap with the washer symbol on it. Add washer fluid until the tank is full. See Engine Compartment Overview on page 373 for reservoir location. Notice: • When using concentrated washer fluid, follow the manufacturer's instructions for adding water. • Do not mix water with ready-to-use washer fluid. Water can cause the solution to freeze and damage your washer fluid tank and other parts of the washer system. Also, water does not clean as well as washer fluid. • Fill your washer fluid tank only three-quarters full when it is very cold. This allows for expansion if freezing occurs, which could damage the tank if it is completely full. • Do not use engine coolant (antifreeze) in your windshield washer. It can damage your washer system and paint. 404