Porsche CARRERA GT-2004 Manual page 138

Windows
The road dust which settles on the windshield and
windows contains particles of tire rubber and oil
residue. The interior trim and upholstery release
particles, particularly in strong sunlight, which col-
lect on the insides of the windows. These deposits
are augmented by impurities in the air which en-
ters the car through the fresh air vents.
f Clean all windows regularly, inside and outside,
with Porsche window cleaner.
f If you use a chamois leather for the windows,
do not use it for paintwork as it will otherwise
pick up a certain amount of preservative or pol-
ish and could smear the windows and thus im-
pair vision.
f Remove dead insects with the Porsche insect
remover.
138
Maintenance, Car Care
Wiper blade
A wiper blade that is in perfect condition is vital for
a clear view.
f Replace the wiper blade twice a year (before
and after the cold season) or whenever wiper
performance deteriorates.
f Periodically clean the wiper blade with window
cleaner, especially after the vehicle has been
washed.
We recommend Porsche window cleaner.
If it is very dirty (e.g. with insect remains), it
can be cleaned with a sponge or cloth.
Undercoating
Damage to the surface of the underbody while
driving cannot be ruled out.
The car underside should therefore be inspected
or repaired at regular intervals.
Danger!
Danger of fire and serious personal injuries.
f Do not apply undercoating or similar materials
on or near the exhaust manifold, exhaust
pipes, catalytic converters or heat shields.
During driving the substance used for under-
coating could overheat and ignite.
If your car is driven frequently in areas where salt
has been spread on the roads, the whole engine
compartment should be cleaned thoroughly after
the winter to prevent salt from causing any lasting
damage. A full under-body wash should also be
performed at the same time.
After cleaning the engine or repairing a unit, the
unprotected parts must be preserved using suita-
ble materials.