·
R
eplace the strainer if it is damaged or
missing.
Engine oil
Introduction
Engine oils are ma
tched to the require-
ments of the engines, the emission purifi-
cation systems, and the fuel quality. Due to
the operating principle of combustion en-
gines, engine oil always comes into contact
with combustion residues and fuel, which
has corresponding eects on the ageing
process of the engine oil. The correct en-
gine oil is important for the function and
service life of the engine. A special multi-
grade high-lubricity oil has been filled at
the factory and this can normally be used
as an all-season oil.
Information on warning and indicator
lamps that light up can be found in the
troubleshooting sections at the end of the
chapter → page 335.
WARNING
Engine oil becomes extremely hot when
the engine is running. If engine oil is han-
dled without due c
are, this can cause seri-
ous burns to the body. This can result in
serious injury or death.
·
Always allow the engine to cool down
before performing any work with engine
oil.
WARNING
Engine oil is toxic. Contact with engine oil,
and especially ingestion of engine oil, c
an
cause serious or fatal injuries.
·
Seek medical attention immediately af-
ter swallowing engine oil.
·
Seek medical attention if you have
health problems aer working with en-
gine oil.
·
Always keep engine oil out of the reach
of children and only in the original
sealed container. This also applies to
used oil until it is disposed of.
·
Never store engine oil in empty food
containers, bottles or any other non-
original containers as people finding
these c
ontainers may then drink the en-
gine oil.
·
Avoid regular contact with engine oil to
avoid damaging the skin.
·
Protect skin, face and especially eyes
while working with engine oil.
·
Do not eat, drink or smoke when work-
ing with engine oil.
·
Wash your skin with soap and water af-
ter working with engine oil.
Leaking or spilt engine oil can pollute
the environment.
·
C
ollect any service fluids that escape or
are spilled and dispose of them in
a proper and environmentally responsi-
ble manner.
Engine oil standards
Please refer to , and on page
326 and
at the start of the chapter on
pa
ge 332.
Use oils and fluids in accordance with the
designated specifications and viscosities.
— Standard WSS–M2C956–A1, viscosity
SAE 0 W–20.
Using oils and fluids that do not meet the
designated specifications and viscosities
may result in the following:
— Damage to components not covered by
the vehicle warranty.
— Prolonged engine start-up phases.
— Increased emission values.
— Reduced engine power.
— Increased average fuel consumption.
— Reduced braking performance.
If no engine oil of specification WSS-
M2C956-A1 is available, SAE 0 W-30 en-
gine oil as per ACEA C3 can be used for re-
filling →
.
P
lease note that you should not add more
than 0.5 l (0.5 qt) of alternative engine oil
between scheduled service intervals →
.
332 Checking and refilling
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