1995 GMC Yukon Owner's Manual - Page 322

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. To Add Open the cap labeled WASHER FLUID ONLY. Add washer fluid until the tank is full. NOTICE: When using concentrated washer fluid, follow the manufacturer's instructions for adding water. 0 Don't mix water withready-to-use washer fluid. Water can cause the solution to freeze and damage your washer fluid tank and other parts the washer system.Also, water of doesn't clean aswell as washer fluid. 0 Fill your washer fluid tank only full when it's very cold. 3/4 This allows for expansion, which could damage the tank it is if completely full. Don't use radiator antifreeze in your windshield washer.It can damage your washer system and paint. 6-40