Fuels - Mercedes-Benz OM 904-926 LA BlueTec Operating Instructions Manual

Service products
50
Diesel fuels
Important safety notes
G
WARNING
Fuel is highly flammable. Fire, naked flames
and smoking as well as the use of auxiliary
heaters (sparks) are therefore prohibited
when handling fuel.
Switch off the engine and the auxiliary heating
before refueling.
G
WARNING
Avoid contact with fuels.
It is hazardous to your health if your skin
comes into direct contact with fuels or you
breathe in fuel vapours.
! If you are using drums or canisters to
refuel the engine/vehicle/equipment, you
should filter the fuel before filling.
This prevents malfunctions in the fuel sys-
tem caused by contaminated fuel.
! Only refuel with commercially available
diesel vehicle fuel that complies with the
European standard EN 590.
EN 590 describes a sulphur-free fuel with a
maximum sulphur content of 10 ppm. How-
ever, it is also permitted to operate engines
®
with BlueTec
with up to 50 ppm.
For engines without BlueTec
aftertreatment, the maintenance intervals
must be reduced when operating with
higher sulphur contents. For details on this,
see the table below. Even if the mainte-
nance intervals are reduced, operation with
higher sulphur contents will lead to
increased engine wear, especially on the
fuel injectors.
When necessary, use only approved fuel
additives.
There is otherwise a risk of impaired engine
performance or engine and catalytic con-
verter damage. The use of appropriate fuel
additives is your responsibility.
exhaust gas aftertreatment
®
exhaust gas
! Fuel grade in accordance with EN 590 is
prescribed as mandatory for engines with
®
BlueTec exhaust gas aftertreatment. If
diesel fuel which does not comply with EN
590 is used, it can damage the exhaust
system.
Fuel grade
The following is an overview of typical sulphur
content in percent by weight of fuel available
in various countries. You may obtain informa-
tion about current country-specific fuel sul-
phur contents from any Mercedes-Benz or
MTU Service Centre (
i In some countries, diesel fuel of differing
sulphur contents is available. Diesel fuel
with a lower sulphur content is sold under
the name "Euro diesel" in some countries.
Y page 11).