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Coolants
The coolant is a mixture of water
and antifreeze. In production, the
cooling system is filled with an anti-
freeze-water mixture offering protec
tion to approx. -30° C /-22° F. The
red mark on the temperature gauge
in the instrument cluster is matched
to this antifreeze-water mixture
(approx. boiling point 125° C/
257° F). The protection against
corrosion is also ensured by this
mixture making it unnecessary to
add a corrosion inhibitor.
The coolant remains in the coolling
system all year round and must be
renewed after 3 years at the latest.
If coolant has leaked from the
cooling system, replace the missing
quantity with water and a recom
mended brand of antifreeze. For
normal replenishment (due to
evaporation of water) plain water will
do.
The water should be clean, soft to
medium soft and contain the
minimum amount of scale forming
minerals (potable water quality).
The coolant mixture should always
contain enough antifreeze to ensure
protection to a minimum of -20° C/
-4 ° F.
If antifreeze is not available, add a
corrosion inhibitor to the cooling
water to ensure proper protection
against corrosion. To treat the
cooling water, do not use more than
1 % (10 cm3 /l) of a recommended
corrosion inhibitor.
Without antifreeze in the cooling
system, the water already starts
boiling at approx. 118° C/224° F,
which means that the pointer of the
temperature gauge in the instrument
cluster may still be below the red
mark.
Antifreeze
Your vehicle contains a number of
aluminum parts. The use of
aluminum components in motor
vehicle engines necessitates that
antifreeze/coolant used in such
engines be specifically formulated to
protect the aluminum parts. (Failure
to use such antifreeze/coolant may
result in a significantly shortened
service life.)
Fuels
Coolants
Lubricants etc.
While there may be a number of
antifreeze/coolants available which
will provide the requisite protection,
all such products have not been
tested for MERCEDES-BENZ
vehicles. The following products,
however, are deemed suitable for
use in your car: MERCEDES-BENZ
Anti-Freeze and Summer Coolant.
Prior to the onset of the cold
season, check the coolant for its
resistance to cold. Repeat this
check during the cold spell. Regular
testing of the anti-freeze concentra
tion is carried out only at each
MERCEDES-BENZ maintenance
service.
Protects up to
Antifreeze
-20° C 1
4.50 1/4.7 US qt
- 4°F /
5.75 1/6.1 US qt
-40° C \
6.75 1/7.1 US qt
- 4 0 ° F /
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