Porsche 928 S 1984, Owner'S Manual

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Tree sap
Remove with a lukewarm soap/water solution.
Do not allow tree sap or bird droppings to har-
den on the paint.
Windows
Keep silicone sprays off the windshield to
avoid wiper smear in rain.
Clean all windows regularly to remove road
film and car-wash wax buildup. Use a luke-
warm soap/water solution or an alcohol base
commercial window cleaning agent for the in-
side and outside. If a chamois is used for pol-
ishing the glass, it should exclusively be used
for that purpose.
To assure that windshield washers also func-
tion at freezing temperatures, anti-freeze must
be added to the washer fluid reservoirs before-
hand. It is advisable to use window washer
solvent with anti-freeze all year round. Follow
directions on the can for the right amounts to
be used. Do not use engine coolant anti-
freeze or any other solution that can da-
mage the paint.
Wiper blades
Always loosen frozen wiper blades from glass
as they may tear otherwise.
Remove all wiper blades periodically and clean
them thoroughly with an alcohol base clean-
ing solution. Use a sponge or soft cloth and
wipe lengthwise.
Weatherstrips
To seal properly, weatherstrips around hood,
windows and doors must be pliable. To retain
flexibility of the rubber, spray with silicone, coat
with talcum powder or glycerine to retain flexi-
bility of the rubber and to protect against freez-
ing in the winter.
Antenna
The telescopic radio antenna should be
cleaned weekly. Do not retract a dirty antenna
as this may damage the electric mechanism.
A dirty antenna can also produce poor radio
signal reception. Wipe the antenna with a soft,
lightly oiled cloth. Do not use wax based oils.
Use a clear, thin oil only (for example: sewing
machine oil).
Light alloy wheels
To preserve the decorative appearance of the
light aluminium cast, some special care is ne-
cessary. Aside from road dirt and salt sprays,
brake metal dust will exert corrosive effects.
If left on too long, brake metal dust can cause
pitting. Wash the wheels with a sponge or hose
brush every other week. Road salts should be
removed weekly with an acid free cleaning
solution. Every three month (after regular
cleaning) the wheels should be coated with
petroleum jelly. Rub it in firmly with a soft cloth.
Never use abrasive or metal polishing cleaning
agents.
Remember that moisture and road salt on
brakes may affect braking efficiency. Test
the brakes after each car or wheel wash.
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