1996 GMC Suburban Owner's Manual - Page 284

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. Open the cap labeled W A S m RWD 6NlY Add washer fluid until the tank is full. NOTICE: 0 Adding Washer Fluid 0 0 0 When using concentrated washer fluid, follow the manufacturer's instructions for adding water. Don't mix water with ready-to-use washer fluid. Water can cause the solution freeze to and damage your washer fluid tank and other partsof the washer system. Also, water doesn't clean as well as washerfluid. Fill your washer fluid tank only three-quarters full when it's very cold. This allows for expansion,which could damage the tankif it is completely full. Don't use radiator antifreezein your windshield washer. It can damage your washer system and paint. 6-30