Service products and capacities
369Coolant
The coolant is a mixture of water and anti-
freeze/corrosion inhibitor. It performs the
following tasks:
R Anti-corrosion protection
R Antifreeze protection
R Raising the boiling poin t
i When the vehicle is first delivered, it is
topped up with a coolant that will ensure
adequate antifreeze and corrosion protec -
tion.
! Only top up with coolant that has been
premixed with the desired quantity of anti -
freeze protection. You could otherwise
damage the engine.
There is more information about coolant
and topping it up on Mercedes-Benz Spec-
ifications for Service Products Sheet
310.1.
! Always use a suitable coolant mixture,
even in countries where high temperatures
prevail.
Otherwise, the cooling system will not be
sufficiently protected from corrosion, and
the boiling point will be too low .If antifreeze/corrosion inhibitor is present in
the correct concentration, the boiling point of
the coolant will be around 130 °C.
The antifreeze/corrosion inhibitor concentra-
tion in the cooling system should:
R
be at least 50%. This will protect the coolin g
system against freezing down to around
-37 °C.
R not exceed 55% (antifreeze protection
down to -45 °C), otherwise heat will not be
effectively dissipated .
If the vehicle is losing coolant, top it up with
equal amounts of water and antifreeze/cor-
rosion inhibitor. Mercedes-Benz recom-
mends an antifreeze/corrosion inhibitor
which has been approved for Mercedes-Benz.
! The cooling system contains a lifetime
supply which must be renewed after 15
years, or after 250, 000 km at the latest.
Have the renewal confirmed in the Service
Booklet.
The warranty is only valid if you top up with
an antifreeze/corrosion inhibitor which
has been approved by Mercedes-Benz. Technical data
204_AKB; 2; 3, en-GB
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Service products and capacities
370
Capacities The following values indicate the total cooling system capacities.
C 180 KOMPRESSOR
C 200 KOMPRESSOR C 230
C 280
C 350
C 280 4MATIC
C 350 4MATIC C 200 CDI
C 220 CDI C 320 CDI
C 320 CDI 4MATIC Coolant 3.8
l 4.8
l 6.0
l 5.7
l Amount of antifreeze/corrosion inhibitor required for antifreeze protection
Down to -37 °C
(approximately 50%) 1.9
l 2.4
l 3.0
l 2.9
l Down to -45 °C
(approximately 55%) 2.1
l 2.7
l 3.5
l 3.1
l Techni
cal data
204_AKB; 2; 3, en-GB
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