Mercedes-Benz OM 904-926 LA BlueTec, Руководство по эксплуатации

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The corrosion inhibitor/antifreeze in the cool-
ant has the following properties:
R
anti-corrosion protection
R
antifreeze protection
R
increases the boiling temperature
Leave the coolant in the engine all year round
in order to prevent corrosion and to increase
the boiling point. Also do this in countries with
hot outside temperatures.
Check the corrosion inhibitor/antifreeze con-
centration in the coolant every six months.
Only use approved corrosion inhibitor/anti-
freeze agents.
Topping up coolant
When topping up, only use prepared coolant
with 50% by volume corrosion inhibitor/anti-
freeze agent.
Before topping up, observe the quality of the
corrosion inhibitor/antifreeze agent in the
cooling system (Sheet no.). Corrosion inhibi-
tors/antifreeze agents compliant with Sheet
325.3 and 326.3 must not be mixed with
those of Sheet 325.0/2 or 326.0/2.
Only top up using a corrosion inhibitor/anti-
freeze agent of the same quality grade.
Miscibility of corrosion inhibitor/anti-
freeze agents
! Corrosion inhibitors/antifreeze agents
that comply with Sheet 325.3 and 326.3
must not be mixed with those of Sheet
325.0/2 or 326.0/2. This prevents dam-
age to the engine cooling system.
Renewing coolant
Coolant change with antifreeze protection:
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every three years if using corrosion inhibi-
tor/antifreeze agent compliant with Sheet
325.0/2 and 326.0/2
R
every five years if using corrosion inhibitor/
antifreeze agent compliant with Sheet
325.3 and 326.3
Coolant change with corrosion inhibitor/anti-
freeze agent compliant with Sheet 325.3,
326.3: before adding this corrosion inhibitor/
antifreeze agent, the cooling system must
first be flushed (
Y
page 76).
When renewing the coolant, ensure that it
contains 50% by volume of corrosion inhibi-
tor/antifreeze agent. This corresponds to
antifreeze protection down to −37 †.
Do not exceed 55% by volume (antifreeze pro-
tection down to approximately −45 †). Heat
dissipation properties are otherwise
impaired.
The water in the coolant must meet certain
requirements, which are often fulfilled by
drinking water. The water must be treated if
its quality does not meet the required stand-
ards.
Please note the Mercedes-Benz Specifica-
tions for Service Products, Sheet num-
ber 310.1.
Further information about operating and road
safety for your engine/vehicle/equipment is
available from any Mercedes-Benz or MTU
Service Centre (
Y
page 11).
Coolant additive without antifreeze prop-
erties
If your vehicle does not need antifreeze pro-
tection, e.g. in countries with consistently
high outside temperatures, you can, as an
exception, use a coolant additive.
Instead of corrosion inhibitor/antifreeze
additive, add a coolant additive compliant
with Sheet number 312.0 of the Mercedes-
Benz Specifications for Service Products to
the water.
Improvers (corrosion-inhibiting oils) are not
permitted.
Renew the coolant annually.
Further information about the required water
quality and approved coolant additives with-
out antifreeze protection is available from any
Mercedes-Benz or MTU Service Centre
(
Y
page 11).
Service products
49
Maintenance and care
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