Porsche 944 S2 Owner's Manual page 63

Cooling System
Only
use
additives
recommended Ior
aluminium
engines and
radiators.
your
Porsche
dealer will
be able to
advise
you.
For year
round driving.
phosphate_free antF
freeze
is
added
at
the
factory for
tem-
peratures
down to:
31'F
/
-3s"c
Because
of
its
anli-corrosion
properties,
antrlreeze
should
also remain
in the cooling
system for
summer operation.
COoling sys,
tem
capacity
and
specified antifreeze
and
water ratios
are
listed under
..Filljng
capacities".
Use any
quality
phosphate-free
anti_freeze
containing
ethylene
glycol,
availabte at your
Porsche dealer. Anli-freeze
other
than
specified by
Porsche for
aluminium
engi_
60
ldropped
to
189"F,
87.C and untit the en-l
gine itself
has cooled
down
sufficienfly.
I
Checking coolant level in expansion tank
A
correctly functionrng cooling
system
re-
qurres 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
localed in
the
engine comparlment
(see
illuslration). Since
the
expansion
tank
is
transparent,
the coolant
level can be check-
ed visually without
removing the
filler
cap.
When the
engine is cold, the coolant
level
should be
between
the minimum and
maxi_
mum mark on
the expansion tank.
Since
the closed coollng
system loses
at_
most
no
coolant,
topping up is
normally
not
required.
An
obvious loss of
coolant
indicates
leakage. ln this
case contact your
dealer.
(
(
(,
(
(
(
(,
(
(
(
t
li
t
t'
i
t
t
nes and radialors
may cause
corlosion of
the cooling system,
Ieading to enqine
over_
heating and damaqe
Only Ior topping
up coolant.
a
smal
amount
of anti-freeze
contatning
ehtylene
qlvcol
and
phosphales may
be
used
if
recommended
anti-freeze is
not available.
The anti-corrosion properties
and
the
anti-
lreeze consistency
will
diminish
gradua
y.
We recommend /enewing
the
coo_lant mrx-
ture at least every
2 years.
WABN|NG
I
The radiator fan is electrically driven.
lt
is
I
switched on automatically when
the
cool_
ant
reaches
198"F
/
92"C.
Even when
the
]
engine is turned
off. lhe
fan
will
continuo
running. until
the
coolant temperature
has
I
WARNING
.
Do not open the
filler
cap when the
en_
gine
is hot
because
of
the danqer
ot
scalding.
Allow
the engine to cool-down.
Protect
your
hands, arms and
lace_
r
Using
a
thick
rag, open the cap carefulty
and only
enough
lo
allow
excess
pressure
to
escape
before
removing
the
t
t
t
I
t
i
t,
t'
t
I
cap.