Buick Regal Owner's Manual page 390

11-12 Service and Maintenance
Windshield
For safety, appearance, and the
best viewing, keep the windshield
clean and clear.
Signs of damage include
.
scratches, cracks, and chips.
Trained dealer technicians can
.
inspect the windshield and
recommend proper replacement
if needed.
Wiper Blades
Wiper blades need to be cleaned
and kept in good condition to
provide a clear view.
Signs of wear include streaking,
.
skipping across the windshield,
and worn or split rubber.
Trained dealer technicians can
.
check the wiper blades and
replace them when needed.