1995 Buick Century Owner's Manual - Page 226

Windshield WasherFluid What to Use When you need windshield washer fluid, be sure to read the manufdcturer's instructions before use. If you will be operating your vehicle in an area where the temperatLIre may fall below freezing, use a fluid that has sufficient protection against freezing. The wagon rear washer fluid comes from the windshield washer reservoir. 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. Don't mix water with ready-to-use washer fluid. Water can cause the solution to freeze and damage your washer fluid tank and other partsof the washer system. Also, water doesn't clean as well as washer fluid. Fill your washer fluid tank only3/4 full when it's very cold. This allows for expansion, which could damage the tank if it is completely full. Don't use radiator antifreeze in your windshield washer. It can damage your washer system and paint. To Add 0 The windshield washer reservoir is located on the passenger's side of the engine compartment. 6-22