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Fuels
Coolants
Coolants
The coolant is a mixture of water and
antifreeze. In production, the cooling
system is filled with an antifreeze-
water mixture offering protection to
approx. - 3 0 ° C / - 2 2
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 cooling
system all year long and must be
renewed after 3 years at the latest. If
coolant is lost, replace missing
quantity with water (potable water
quality) plus antifreeze of a recom
mended brand.
For reasons of corrosion inhibition
the minimum proportion of antifreeze
)
must be 34 % , which gives antifreeze
protection down to - 2 0 ° C / - 4 ° F.
92
Lubricants etc.
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
cm
(10
F. The red
0
sion 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.)
%
1
/l) of a recommended corro
3
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 vehi
cles.
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 sufficient
protection to prevent freezing. Re
peat this check during the cold spell.
Regular testing of the antifreeze
concentration is carried out only at
each MERCEDES-BENZ maintenance
service.
Protection
up to
Antifreeze
20
4.5 0I/4 .8 U S qt
-
'
- 4'
-30'
5.50I/5 .8U S qt
22
-
'
-40'
6.50I/6.9U S qt
-40'
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