Porsche 928S 1983, Руководство пользователя

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dows. Remember to clean the wiper blades
as well. If you use a chamois leather for the
windows, do not use it for the paintwork as it
will otherwise pick up a certain amount of
preservative or polish and could smear the
windows and thus impair vision. Use a spe-
cial sponge for removing dead insects from
the windshield.
In winter a cleaning and anti-freeze agent
must be added to the water used by the wind-
screen washer system. These agents are to
be added in the ratio specified by the manu-
facturer.
Lights, plastics
Use only a soap and water solution for clean-
ing the plastic light lenses. Never use che-
mical cleaning agents for this purpose. The
same applies to other plastic parts and fi-
nishes.
Door, lid and window seals
Rubberseals tend to age and become brittle
or crack if they are not treated occasionally
with glycerine or talcum powder.
Aluminum wheels
Pitting can occur if metallic particles which
cause contact corrosion (e. g. brass or cop-
per in brake dust) are allow to remain on the
aluminum for too long.
Regular care is necessary in order to retain
the attractive surface finish. The wheels
should be washed down with a sponge or
wash brush about every two weeks. In areas
where salt is spread on winter roads or there
is a lot of airborne industrial dust, it is best to
clean the the wheels weekly. Non-acidic clean-
ing agents with a maximum pH of 10 may be
used for this purpose.
Every three months you should coat the
wheels with a non-corrosive grease (vaseli-
ne) after cleaning. Use a clean cloth to tho-
roughly rub the grease into the surface.
Polishes which dissolve oxide, as frequently
used for other metals, or abrasive tools or
agents are unsuitable because they break
down the paint-resp. oxide film.
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