Mercedes-Benz 2009 M-Class Operator's Manual page 419

Do not blend other fuel additives with fuel.
This only results in unnecessary cost and may
be harmful to the engine operation.
!
Damage or malfunction resulting from
poor fuel quality or from blending additional
fuel additives other than those tested and
approved by us for use on Mercedes-Benz
vehicles are not covered by the Mercedes-
Benz Limited Warranty or by any pre-owned
or Extended Limited warranties.
®
AdBlue
®
AdBlue is a non-flammable, non-toxic,
colorless and odorless, water-soluble liquid.
®
! Only use AdBlue complying with
ISO 22241. Do not blend with additives.
! Rinse surfaces that have come into
®
contact with AdBlue , or remove AdBlue
with a moist cloth and cold water
®
immediately. If AdBlue has crystallized
already, use cold water and a sponge.
®
AdBlue residues will crystallize and soil
the affected surfaces.
High ambient temperatures
®
If AdBlue in the reservoir heats up to above
122‡ (50†) for a long period of time, for
example due to direct sunlight, ammonia gas
vapors may escape when opening the
®
AdBlue tank.
G Warning!
When opening the filler cap of the
®
AdBlue tank ammonia gas vapors may
®
escape. Refill AdBlue in a well ventilated
area only. Ammonia gas vapors have a
pungent odor and are particularly irritating
for your skin, mucous membranes, and
eyes. Inhaling ammonia gas vapors will
cause burning eyes, nose, and throat, as
well as coughing and watering eyes.
Low ambient temperatures
®
®
AdBlue freezes at a temperature of
approximately 12‡ (-11†). Your vehicle is
factory equipped with an AdBlue
system. The vehicle can thus be operated at
temperatures below 12‡ (-11†).
Fuels, coolants, lubricants etc.
Special additives
!
Only use AdBlue
ISO 22241. Do not add additives to
®
AdBlue and do not dilute AdBlue
water. Otherwise, the BlueTEC exhaust gas
aftertreatment system could be damaged.
Damage caused by using additives or
diluting with water are not covered by the
Mercedes-Benz Limited Warranty.
Purity
The purity of AdBlue
importance for avoiding malfunctions in the
exhaust gas aftertreatment.
®
If AdBlue is pumped out of the tank, e.g.
during repair work, the same liquid must not
be used to refill the tank as its purity is no
longer guaranteed.
! Impurities caused for example by other
service products, cleaning agents, and dust
®
preheating result in increased emissions,
malfunctions, catalyst damage, or engine
damage.
Technical data
®
complying with
®
with
®
is of particular
Z
417