Cooling System; Windshield Washer Fluid - Porsche 928 1980 Owner's Manual

Windshield washer fluid

reservoir
The transparent fluid reservoir is located in
the right rear of the engine compartment, in
front of the expansion tank (see illustration).
Clear water is normally not adequate to keep
your windshield and headlights clean. Add a
solution, such as windshield washer solvent
and anti-freeze. Porsche does not recom-
mend the use of a "special silicone remover"
cleaning agent. Consult your Porsche dealer
regarding accurate mixing ratios or follow
instructions on container of the anti-freeze
manufacturer. Do not use engine coolant
anti-freeze.

Cooling system

For year round driving, anti-freeze is added
at the factory for temperatures down to:
-23° F/-30°C for U.S.A.
0
-40° F/-40 C for Canada
Because of its anti-corrosion properties,
anti-freeze should also remain in the cooling
system for summer operation. Cooling sys-
tem capacity and specified anti-freeze and
water ratios are listed under "Filling Capa-
cities".
Use any quality phosphate-free anti-freeze
containing ethylene glycol, available at your
Porsche dealer. Anti-freeze other than
specified by Porsche for aluminium engi-
nes and radiators may cause corrosion
of the cooling system, leading to engine
overheating and damage.
Only for topping up coolant, a small amount
of anti-freeze containing ethylene glycol and
phosphates may be used if recommended
anti-freeze is not available.
The anti-corrosion properties and the anti-
freeze consistency will diminish gradually.
We recommend renewing the coolant mix-
ture at least every 2 years.
Warning: The radiator fan is electrically
driven. It is switched on automatically by
a thermostat when the coolant reaches
92°C/198°F. Even when the engine is
turned off, the fan will continue running,
until the coolant temperature has dropp-
ed to 87°C/189°F and until the engine it-
self has cooled down sufficiently.
See "Cautions".
Checking coolant level in expansion tank
A correctly functioning cooling system re-
quires only minor care. The coolant level
should be checked from time to time, and
always before going on a longer trip.
The expansion tank with filler cap opening
is located in the right rear of the engine com-
partment (see illustration). Since the expan-
sion tank is transparent, it is not necessary
to unscrew the filler cap.
When the engine is cold, the coolant level
should reach the filler mark on the expansion
tank. When the engine is warm, the coolant
level will be above the filler mark.
Since the closed cooling system loses al-
most no coolant, topping up is normally not
required. An obvious loss of coolant indi-
cates leakage. In this case contact your
dealer.
Warning: Do not open the filler cap when
the engine is hot because of the danger of
scalding. Allow the engine to cool down.
Protect your hands, arms and face. Open
the filler cap to the first catch to allow
pressure to escape before removing the
cap.
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