Buick Lucerne 2007 Owner's Manual page 366

Adding Washer Fluid
366
Open the cap with the
washer symbol on it.
Add washer fluid
until the tank is full. See
Engine Compartment
Overview on page 334
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.