2004 Buick Century Owner's Manual - Page 249

Adding Washer Fluid Open the cap with the washer symbol on it. See Engine Compartment Overview on page 5-12 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 Add washer fluid until the windshield washer reservoir is full. windshield washer. It can damage your washer system and paint. 5-37