Engine Oil Viscosity - Mercedes-Benz C-Class Operator's Manual

Service products and filling capacities
400
on short journeys
R
in mountainous terrain
R
Engine oil
General notes
! Never use engine oil or an oil filter of a
specification other than is necessary to ful-
fill the prescribed service intervals. Do not
change the engine oil or oil filter in order to
achieve longer replacement intervals than
those prescribed. You could otherwise
cause engine damage or damage to the
exhaust gas aftertreatment.
Follow the instructions in the service inter-
val display regarding the oil change. Other-
wise, you may damage the engine and the
exhaust gas aftertreatment.
When handling engine oil, observe the impor-
tant safety notes on service products
( page 397).
Y
The engine oils are matched to the perform-
ance of Mercedes-Benz engines and service
intervals. You should therefore only use
engine oils and oil filters that are approved for
vehicles with maintenance systems.
For a list of approved engine oils and oil filters,
consult an authorized Mercedes-Benz Cen-
ter. Or visit the website
http://bevo.mercedes-benz.com.
The table shows which engine oils have been
approved for your vehicle.
Model
C 300
C 300 4MATIC
C 400 4MATIC
AMG vehicles
i
MB approval is indicated on the oil con-
tainers.
Engin MB Approval
e
model
274 229.3, 229.5,
229.51,
229.52
276 229.5
177 229.5
Filling capacities
The following values refer to an oil change
including the oil filter.
Model
C 300
C 300 4MATIC
C 400 4MATIC
Additives
! Do not use any additives in the engine oil.
This could damage the engine.

Engine oil viscosity

Viscosity describes the flow characteristics
of a fluid. If an engine oil has a high viscosity,
this means that it is thick; a low viscosity
means that it is thin.
Select an engine oil with an SAE classification
(viscosity) suitable for the prevailing outside
temperatures. The table shows you which
SAE classifications are to be used. The low-
temperature characteristics of engine oils
can deteriorate significantly, e.g. as a result
of aging, soot and fuel deposits. It is therefore
strongly recommended that you carry out reg-
ular oil changes using an approved engine oil
with the appropriate SAE classification.
Capacity
7.4 qt (7.0 l)
6.9 qt (6.5 l)