oil ages when driving as a result of soot and
fuel residue. The characteristics of engine oil
deteriorate significantly at low outside tem‐
peratures.
#
Use an engine oil of the appropriate SAE
classification at low outside tempera‐
tures.
#
Use oil for all-year-round operation.
The temperature readings of the SAE classifica‐
tion are always based on fresh oil. The tempera‐
ture characteristics of the engine oil, especially at
low outside temperatures, can deteriorate signifi‐
cantly due to ageing when driving.
Therefore, Mercedes-Benz recommends that you
change the engine oil before the start of the cold
season. Only use an approved engine oil in the
prescribed SAE classification for this purpose.
The viscosity indicates the flow characteristics of
a fluid. With regard to engine oil, a high viscosity
is synonymous with thick liquid and a low viscos‐
ity with thin liquid. Depending on the outside
temperatures, select the engine oil according to
the SAE classification (viscosity). The table shows
the SAE classifications to be used. The low tem‐
perature characteristics of engine oils can deteri‐
orate significantly during operation due to ageing
and soot and fuel accretion, for example. A regu‐
lar oil change with an approved engine oil in the
appropriate SAE classification is therefore
strongly recommended.
Additive
*
NOTE Engine damage due to use of addi‐
tives in the engine oil
The use of additional additives in the engine
oil can damage the engine.
#
Do not use any additional additives in
the engine oil.
Miscibility of engine oil
The benefits of high-quality engine oils are
reduced by mixing oil.
We recommend that you only use engine oil of
the same grade and SAE classification as the oil
filled at the last oil change. If, in exceptional
cases, oil of the type in the engine is not availa‐
ble, use another approved mineral or synthetic
engine oil.
You must then have an oil change carried out at
the earliest possible opportunity.
Engine oils are distinguished by:
R
engine oil brand
R
grade (MB-Freigabe or MB-Approval)
R
SAE classification (viscosity)
Oil change interval
The on-board computer automatically shows the
date of the next oil change as an event message
on the display.
Mercedes-Benz recommends having the oil
changed at a qualified specialist workshop.
Engine oil capacities
Engine
Engine oil
OM642
approx. 12.5 litres
OM651 (rear wheel
drive)
approx. 11.5 litres
OM651 (front wheel
drive)
approx. 8 litres
1
Oil drain screw access (vehicles with under‐
floor panelling)
Information on oil consumption
Depending on the driving style, the vehicle con‐
sumes a maximum of 1.0 litre of engine oil per
1000 km.
In the following cases, oil consumption may also
exceed this limit:
R
the vehicle is new.
Technical data 355