When handling coolant, comply with the impor-
tant safety precautions for service products
Coolant is a mixture of water and corrosion
inhibitor/antifreeze. It performs the following
tasks:
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corrosion protection
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antifreeze protection
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raising the boiling point
To prevent damage to the engine cooling sys-
tem, use only approved corrosion inhibitor/anti-
freeze that complies with the Mercedes-Benz
Specifications for Service Products.
Mercedes-Benz recommends an antifreeze/
corrosion inhibitor concentrate in accordance
with MB Specifications for Service Products
325.5326.5.
Check the corrosion inhibitor/antifreeze con-
centration in the coolant every six months.
The percentage of corrosion inhibitor/anti-
freeze additive in the engine cooling system
should:
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be at least 40%. This way, the engine cooling
system is protected against freezing down to
approximately
Ò
25 †.
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not exceed 50% (antifreeze protection down
to
Ò
37 †). Otherwise, heat will not be dissi-
pated as effectively.
If there has been coolant loss, do not refill only
with water. If the vehicle has lost coolant, top up
with equal parts water and corrosion inhibitor/
antifreeze additive. The water used as part of the
coolant mixture must fulfil certain require-
ments; these are usually fulfilled by drinking
water. If the water quality is not sufficient, you
must treat the water.
Further information may be obtained at any
qualified specialist workshop.
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When the vehicle is first delivered, it is filled
with a coolant mixture that ensures adequate
antifreeze and corrosion protection.
i
The coolant is checked at every mainte-
nance interval at a qualified specialist work-
shop.
Important safety notes
If windscreen washer concentrate comes into
contact with hot components of the engine or
the exhaust system, it can ignite. There is a
risk of fire and injury.
Make sure the windscreen washer concen-
trate does not come into contact with the filler
neck.
!
Only use washer fluid that is suitable for
plastic lamp lenses, e.g. MB SummerFit or MB
WinterFit. Unsuitable washer fluid could dam-
age the plastic lenses of the headlamps.
!
Do not use distilled or de-ionised water in
the washer fluid reservoir. Otherwise, the
level sensor may be damaged.
!
Only the washer fluids SummerFit and Win-
terFit can be mixed. Otherwise, the spraying
nozzles could become blocked.
Observe also the safety notes in the "Service
products and capacities" section.
Mixing ratio
Add windscreen washer concentrate to the
washer fluid all year round. Adapt the mixing
ratio to the outside temperatures.
At temperatures above freezing:
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Fill the washer fluid reservoir with a mixture of
water and washer fluid, e.g. MB SummerFit.
Mix 1 part MB SummerFit to 100 parts water.
At temperatures below freezing:
X
Fill the washer fluid reservoir with a mixture of
water and washer fluid, e.g. MB WinterFit.
Adapt the mixing ratio to the outside tempera-
tures.
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Down to
Ò
10 †: mix 1 part MB WinterFit to
2 parts water.
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Down to
Ò
20 †: mix 1 part MB WinterFit to 1
part water.
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Down to
Ò
29 †: mix 2 parts MB WinterFit to 1
part water.
Service products and capacities
207
Technical data
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