Coolant - Mercedes-Benz OM 904 LA Operating Instructions Manual

Operation
Service products
The oil change intervals will change if en-
gine oils of a different quality grade are
used. Information is available from any
Mercedes-Benz Service Centre. Select the
SAE engine oil class in accordance with the
outside temperature.
When maintenance work is carried out,
confirmation of the engine oil change is en-
tered in the Maintenance Booklet along
4
with the engine oil brand, its grade and its
SAE class.
i
The properties of the engine oil deteri-
orate if a lower grade is used to top up
the engine oil level; the engine oil
change and filter replacement must
therefore be carried out at shorter in-
tervals.
Only use engine oils of the same quality
grade and SAE class when topping up.
64

Coolant

Coolant is a mixture of water and anti-
freeze /corrosion inhibitor. To protect
against corrosion and raise the boiling
point, coolant must remain in the cooling
system all year round.
Risk of poisoning
There is a risk of poisoning if coolant is swal-
lowed.
Never swallow coolant.
Never store coolant in containers nor-
mally used for beverages.
Store coolant out of the reach of chil-
dren.
!
The effectiveness of the coolant's anti-
corrosion protection decreases over
time.
You should therefore replace the cool-
ant, depending on the antifreeze/
corrosion inhibitor used, every 3 or
G
5 years (see Mercedes-Benz Specifica-
tions for Service Products).
Water
Water without additives is not permitted as
a coolant, even if antifreeze properties are
not necessary.
The coolant water must satisfy certain re-
quirements which are not always fulfilled
by drinking water.
If the water is not of sufficient quality, it
must be treated.
i
Information is available from any
Mercedes-Benz Service Centre.