Coolants - Mercedes-Benz 190 E 2.3 Owner's Manual

Coolants

The coolant is a mixture of water and
anti-corrosion/antifreeze. In produc­
tion, the cooling system is filled with an
anti-corrosion/antifreeze-water mixture
offering protection to approx. - 3 0 ° C /
-2 2 ° F . The red mark on the tem pera­
ture gauge in the instrument cluster is
matched to this anti-corrosion/anti-
freeze-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 re­
newed after 3 years at the latest.
If coolant is lost, replace missing quan­
tity with water (potable water quality)
plus anti-corrosion/antifreeze of a re­
commended brand.
For reasons of corrosion inhibition the
minimum proportion of anti-corrosion/
antifreeze must be 34% , which gives
anti-corrosion/antifreeze protection
down t o —2 0 °C /-4 °F .
If anti-corrosion/antifreeze is tem pora­
rily not available, add a corrosion inhi­
bitor 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 recom­
mended corrosion inhibitor.
W ithout anti-corrosion/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.
Driving the vehicle without anti-corro-
sion/antifreeze should be done only in
emergency situations. Add anti-corro­
sion/antifreeze as soon as possible.
Anti-corrosion/antifreeze
Your vehicle contains a number of al­
uminium parts. The use of aluminium
components in motor vehicle engines
necessitates that anti-corrosion/anti-
freeze/coolant used in such engines be
specifically formulated to protect the
aluminium parts. (Failure to use such
anti-corrosion/antifreeze/coolant may
result in a significantly shortened ser­
vice life.)
While there may be a number of anti­
corrosion/antifreeze/coolants available
which will provide the requisite protec­
tion, all such products have not been
tested for MERCEDES-BENZ vehicles.
The following product, however, is re­
commended 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 protec­
tion to prevent freezing. Repeat this
check during the cold spell. Regular
testing of the anti-corrosion/antifreeze
concentration is carried out only at each
MERCEDES-BENZ maintenance ser­
vice.
Protects up to Anti-corrosion/
antifreeze
-2 0 ° C \
3.00 I/3.2 US qt
- 4°F J
—30°C \
3.75 I/4.0 US qt
- 2 2 ° F J
4.50 I/4.8 US qt