Mercedes-Benz 190 E 2.3-16 201 1987, Owner'S Manual

Page: 100 / 113

The engine coolant is a mixture of
water and anticorrosion/antifreeze,
which provides:
• corrosion protection
• freeze protection
• boiling protection (by increasing
the boiling point).
The cooling system was filled at the
factory with a coolant providing freeze
protection to - 3 0 ° C ( -2 2 ° F) and cor­
rosion protection. The red area of the
temperature gauge is matched to the
heating properties of this coolant solu­
tion.
The coolant solution must be used year
round to provide the necessary corro­
sion protection and increase in the
boilover protection. You should have it
replaced every 3 years.
To provide the important corrosion pro­
tection, the solution must be at least
33 % anticorrosion/antifreeze (equals a
freeze protection to - 2 0 ° C [ - 4 ° F]). If
you use a solution that is more than
55 % anticorrosion/antifreeze (freeze
protection to - 4 5 ° C [- 4 9 ° F]), the
engine temperature will increase due
to the lower heat transfer capability of
the solution. Therefore, do not use
more than this amount of anticorrosion/
antifreeze.
Coolants
If the coolant level is low, water and MB
anticorrosion/antifreeze should be
used to bring it up to the proper level
(have cooling system checked for
signs of leakage).
The water in the cooling system must
meet minimum requirements, which
are usually satisfied by normal drinking
water. If you are not sure about the
water quality, consult your authorized
MERCEDES-BENZ dealer.
Anticorrosion/antifreeze
Your vehicle contains a number of
aluminium parts. The use of aluminium
components in motor vehicle engines
necessitates that anticorrosion/anti­
freeze/coolant used in such engines be
specifically formulated to protect the
aluminium parts. (Failure to use such
anticorrosion/antifreeze/coolant will
result in a significantly shortened
service life.)
Therefore the following product is
strongly recommended for use in your
car: MERCEDES-BENZ Anticorrosion/
Antifreeze Agent.
Before the start of the winter season
(or once a year in the hot southern
regions), you should have the anticor­
rosion/antifreeze concentration
checked. The coolant is also regularly
checked each time you bring your vehi­
cle to your authorized MERCEDES-
BENZ dealer for maintenance service.
Freeze
protection
Anticorrosion/
antifreeze
- 3 0 ° C
( -2 2 ° F)
- 4 5 ° C
( -4 9 ° F)
3.50 liter
(3.7 US qt)
4.50 liter
(4.8 US qt)
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