technical data MERCEDES-BENZ C350S 2010 W204 Owner's Guide

ModelC 300 Sport57
C 300 4MATIC Sport 57
C 350 58
C 350 Sport 57
C 350 4MATIC 5818" wheelsFront axleAMG rims (light alloy)
Wheel offset8 J x 18 H2
1.97 in (50 mm)All-season tires 59225/40 R18 92H XL (Extra Load)
M+SRear axleAMG rims (light alloy)
Wheel offset8.5 J x 18 H2
2.13 in (54 mm)All-season tires 59,60255/35 R18 94H XL (Extra Load)
M+SModelC 63 AMG18" wheelsFront axleAMG rims (light alloy)
Wheel offset8 J x 18 H2
1.77 in (45 mm)Summer tires 59235/40 ZR18 95Y XL (Extra Load)Rear axleAMG rims (light alloy)
Wheel offset9 J x 18 H2
2.13 in (54 mm)Summer tires 59,60255/35 ZR18 94Y XL (Extra Load)57
USA only.
58 Canada only.
59 Radial-ply tires.
60 Must not be used with snow chains.348Rims and tiresTechnical data
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Spare wheel
! Compare the recommended tire inflation pressure for your vehicle with the tire inflation
pressure on the yellow label located on the spare wheel rim.
If the tire inflation pressure on the yellow label on the spare wheel rim differs from the values
given in this Operator’s Manual, inflate the tire to the recommended tire inflation pressure
given on the yellow label on the spare wheel rim.
i Please note that the tire inflation pressure of the spare wheel differs from the tire inflation
pressure of the road tires.ModelC 250 (all models) 61
C 300 62
C 300 4MATIC 62C 30061
C 300 4MATIC 61
C 300 Sport 62
C 300 4MATIC Sport 62
C 350 (all models)C 63 AMGRim (steel)3.5 B x 16 H23.5 B x 17 H23.5 B x 18Wheel offset0.79 in (20 mm)0.79 in (20 mm)0.79 in (20 mm)Minispare tire 63T 125/90 R16 98MT 125/80 R17 99MT 125/70 R18 99MRecommended
tire inflation
pressure61 psi (4.2 bar)61 psi (4.2 bar)61 psi (4.2 bar)Fuels, coolants, lubricants, etc.
Capacities
Vehicle components and their respective
lubricants must match. Therefore only use
products tested and approved by Mercedes-
Benz.
For information on tested and approved
products, contact an authorized Mercedes-
Benz Center or visit www.mbusa.com (USA
only).
GWarning!
Comply with all valid regulations with respect
to handling, storing, and disposing of service
fluids. Otherwise you could endanger persons
or the environment.
Keep service fluids out of the reach of
children.
For health reasons, you should prevent
service fluids from coming into direct contact
with your skin or clothing.
If a service fluid is swallowed, contact a
physician immediately.61 Canada only.
62 USA only.
63 Must not be used with snow chains.Fuels, coolants, lubricants, etc.349Technical data204_AKB; 5; 23, en-USd2ureepe,Version: 2.11.8.12009-07-16T17:54:06+02:00 - Seite 349Z

ModelCapacityFuels, coolants,
lubricants, etc.Engine with
oil filterC 250 64
C 250 Sport 64
C 300
C 300 Sport 65
C 3508.5 US qt (8.0 l)Approved engine
oilsC 250 4MATIC 64
C 250 4MATIC Sport 64
C 300 4MATIC
C 300 4MATIC Sport 65
C 350 4MATIC 647.4 US qt (7.0 l)C 63 AMG669.0 US qt (8.5 l)Manual
transmissionC 250 64
C 250 Sport 641.3 US qt (1.2 l)MB Manual
Transmission OilC 300
C 300 Sport 651.6 US qt (1.5 l)Automatic
transmissionC 250 64
C 250 Sport 649.0 US qt (8.5 l)MB Automatic
Transmission FluidC 250 4MATIC 64
C 250 4MATIC Sport 6410.3 US qt (9.7 l)C 300
C 300 Sport 65
C 350 64
C 350 Sport 659.5 US qt (9.0 l)C 300 4MATIC
C 300 4MATIC Sport 65
C 350 4MATIC 6410.5 US qt (9.9 l)C 63 AMG679.6 US qt (9.1 l)64
Canada only.
65 USA only.
66 Engine with oil cooler.
67 Automatic transmission with oil cooler.350Fuels, coolants, lubricants, etc.Technical data
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ModelCapacityFuels, coolants,
lubricants, etc.Front axleC 250 4MATIC 64
C 250 4MATIC Sport 640.63 US qt (0.6 l)Hypoid gear oil
(SAE 85W-90)C 300 4MATIC
C 300 4MATIC Sport 65
C 350 4MATIC 641.2 US qt (1.1 l)Rear axleC 25064
C 250 Sport 641.1 US qt (1.0 l)Hypoid gear oil
(SAE 85W-90)C 250 4MATIC 64
C 250 4MATIC Sport 64
C 300
C 300 Sport 65
C 300 4MATIC
C 300 4MATIC Sport 65
C 350 64
C 350 Sport 65
C 350 4MATIC 641.2 US qt (1.1 l)C 63 AMG1.3 US qt (1.2 l)Fuchs Titan
EG 5010 DPower
steeringAll modelsapprox. 0.9 US qt (0.8 l)MB Power Steering
Fluid (Chevron
Texaco PSF 9109)Brake systemAll models0.53 US qt (0.5 l)MB Brake Fluid
(DOT 4+)Cooling
systemAll models,
except C 63 AMGapprox. 5.1 US qt (4.8 l)MB 325.0
Anticorrosion/
AntifreezeC 63 AMGapprox. 12.4 US qt (11.7 l)64 Canada only.
65 USA only.Fuels, coolants, lubricants, etc.351Technical data204_AKB; 5; 23, en-USd2ureepe,Version: 2.11.8.12009-07-16T17:54:06+02:00 - Seite 351Z

ModelCapacityFuels, coolants,
lubricants, etc.Fuel tankAll models17.4 US gal (66.0 l)Premium unleaded
gasoline (Minimum
Posted Octane 91
[Avg. of
96 RON/86 MON])
C 300, all models
(with automatic
transmission):
Flexible Fuel
Vehicles (identified
by a label reading
Premium
gasoline or E85
only! on the fuel
filler flap).
Alternative fuel:
Ethanol fuel (E85)Fuel tank
reserveAll models,
except C 63 AMGapprox. 2.1 US gal (8.0 l)C 63 AMGapprox. 3.7 US gal (14.0 l)Air
conditioning
systemAll models—R134a refrigerant
and special
PAG lubricant oil
(never R 12)Washer
systemC 250 64
C 250 Sport 64
C 250 4MATIC 64
C 250 4MATIC Sport 644.2 US qt (4.0 l)MB Windshield
Washer
Concentrate 68
( Y page 358)
Washer fluid mixing
ratio ( Y page 358)C 300
C 300 Sport 65
C 350
C 350 Sport 653.7 US qt (3.5 l)Washer
system and
headlamp
cleaning
systemC 300 4MATIC
C 300 4MATIC Sport 65
C 350 4MATIC 64
C 63 AMG6.3 US qt (6.0 l)64 Canada only.
68 Mixed with water or commercially available premixed washer solvent/antifreeze.
65 USA only.352Fuels, coolants, lubricants, etc.Technical data
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Approved engine oils
Engine oils are specifically tested for their
suitability in our engines and durability for our
service intervals. Therefore, only use
approved engine oils and oil filters required
for vehicles with the Maintenance System.
For a listing of approved engine oils and oil
filters, contact an authorized Mercedes-Benz
Center or visit www.mbusa.com (USA only).
! Using engine oils and oil filters of a
specification other than those expressly
required for the Maintenance System, or
changing of oil and oil filter at change
intervals longer than those called for by the
Maintenance System will result in engine or
emission control system damage not
covered by the Mercedes-Benz Limited
Warranty.
Please follow Maintenance System
recommendations for scheduled oil
changes. Failure to do so will result in
engine or emission control system damage
not covered by the Mercedes-Benz Limited
Warranty.
Mercedes-Benz recommends MOBIL OIL.
Use the table below to determine the
MB sheet number.
ModelEngine,
type
MB sheet
number
C 25069272229.5C 250 Sport69272229.5C 250 4MATIC69272229.5C 250 4MATIC
Sport69272229.5C 300272229.5C 300 Sport70272229.5C 300 4MATIC272229.5ModelEngine,
type
MB sheet
number
C 300 4MATIC
Sport70272229.5C 35069272229.5C 350 Sport70272229.5C 350 4MATIC69272229.5C 63 AMG156229.571
iMB sheet numbers are printed on the
outside of oil containers.
Viscosity grades for engine oils
Using the chart below, select oil viscosity
according to the lowest air temperature
expected before the next oil change.
Engine oil additives
! Do not blend oil additives with engine oil.
They may damage the engine. Damage or
malfunctions resulting from blending oil
additives are not covered by the Mercedes-
Benz Limited Warranty.
69Canada only.70USA only.71Restriction: Only SAE 0W-40/SAE 5W-40 engine oils may be used.
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Air conditioning refrigerant
R134a (HFC) refrigerant and special PAG
lubricating oil are used in the air conditioning
system.
! Never use R 12 (CFC) or mineral-based
lubricating oil. Otherwise damage to the
system will occur.
Brake fluid
GWarning!
During vehicle operation, the boiling point of
the brake fluid is continuously reduced
through the absorption of moisture from the
atmosphere.
Under extremely strenuous operating
conditions, this moisture content can lead to
the formation of bubbles in the system, thus
reducing the system’s efficiency.
Therefore, the brake fluid must be replaced
regularly. Refer to your vehicle’s Maintenance
Booklet for replacement interval.
Only brake fluid approved by Mercedes-Benz
is recommended. Any authorized Mercedes-
Benz Center will provide you with additional
information.
Premium unleaded gasoline
GWarning!
Gasoline is highly flammable and poisonous.
It burns violently and can cause serious
personal injury.
Never allow sparks, flames or smoking
materials near gasoline!
Turn off the engine before refueling.
Whenever you are around gasoline, avoid
inhaling fumes and any skin or clothing
contact. Extinguish all smoking materials.
Direct skin contact with fuels and the
inhalation of fuel vapors are damaging your
health.
! To maintain the engine’s durability and
performance, premium unleaded gasoline
must be used.
If premium unleaded gasoline is not
available and low octane gasoline is used,
follow these precautions:
R Have the fuel tank only partially filled
with unleaded regular gasoline and fill up
with premium unleaded gasoline as soon
as possible.
R Avoid full throttle driving and abrupt
acceleration.
R Do not exceed an engine speed of
3 000 rpm if the vehicle is loaded with a
light load such as two persons and no
luggage.
R Do not exceed 2
/ 3 of maximum
accelerator pedal position if the vehicle
is fully loaded or operating in
mountainous terrain.
Fuel requirements
Only use premium unleaded gasoline. The
octane number (posted at the pump) must be
91 min. It is an average of both the Research
Octane Number (RON) and the Motor Octane
Number (MON): (RON+MON)/2. This is also
known as the ANTI-KNOCK INDEX.
Reformulated gasolines (RFG) and/or
unleaded gasoline containing oxygenates
such as ethanol, TAME, ETBE, IPA, IBA, and
TBA can be used provided the ratio of any one
of these oxygenates to gasoline does not
exceed 10%; MTBE must not exceed 15%.
The ratio of methanol to gasoline must not
exceed 3% plus additional cosolvents.
Using mixtures of ethanol and methanol is not
allowed. Gasohol, which contains 10%
ethanol and 90% unleaded gasoline, can be
used.
These blends must also meet all other fuel
requirements, such as resistance to spark
knock, boiling range, vapor pressure, etc.
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Flexible Fuel Vehicles
All models of the C 300 with automatic
transmission are Flexible Fuel Vehicles.
Flexible Fuel Vehicles are identified by a label
reading Premium gasoline or E85 only! on
the fuel filler flap.
These vehicles are designed to operate on
premium unleaded gasoline or ethanol fuel
(E85), or on any mixture of these two. Ethanol
fuel (E85) is a mixture of approximately 85%
ethanol and 15% unleaded gasoline.GWarning!
Ethanol fuel (E85) and its fumes are highly
flammable, poisonous and burn easily.
Ethanol fuel can cause serious injuries if
ignited or if you come into contact with it or
inhale fumes of it. Avoid inhalation of ethanol
fumes and skin contact with ethanol.
Extinguish all open flames before refueling.
Never smoke or create sparks close to
ethanol.
Switching fuels
For best performance and driveability it is
recommended to use either one or the other
fuel. A refueling pattern that alternates
between the two different fuels should be
avoided if possible.
When switching fuels, make sure:
R Fuel level is below half full.
R Fuel level is above reserve (fuel tank
reserve warning lamp is not lit).
R Amount of added fuel is more than
5 gallons (20 liters).
R Ignition is off during refill.
R Immediately after refueling engine is
started and operated for at least 5 minutes.
These precautions and recommendations are
supposed to prevent any difficulties when
starting and operating the engine which
otherwise may be experienced before the
engine has fully adapted to the different fuel.
If in spite of these recommendations the
engine does not perform properly, adding
more gasoline (at least 3 gallons [12 liters])
to the fuel may improve the engine behavior.
Fuel consumption
E85 fuel contains less energy per gallon than
gasoline. To ensure that engine performance
with ethanol fuel is similar to that when using
gasoline, the engine must burn more ethanol
fuel. As a result, it is to be expected that the
fuel consumption will increase when using
E85 compared to gasoline operation.
Maintenance
Please inform your authorized Mercedes-
Benz Center if you use or have used E85 fuel
when your vehicle is delivered for
maintenance or repairs.
Cold weather performance
It is possible that starting times will
significantly increase at temperatures below
32‡ (0†). At low temperatures the use of a
block heater is recommended (contact an
authorized Mercedes-Benz Center for further
information). Rough idling may also be
experienced at such temperatures before the
engine is fully warmed up.
! E85 fuel is unsuitable for use when
ambient temperatures fall below 14‡
(-10†).
Hot weather performance
At ambient temperatures above 95‡ (35†)
start times may increase and be
accompanied by a rough idle following the
start.
Gasoline additives
A major concern among engine
manufacturers is carbon build-up caused by
gasoline. Mercedes-Benz recommends only
Fuels, coolants, lubricants, etc.355Technical data204_AKB; 5; 23, en-USd2ureepe,Version: 2.11.8.12009-07-16T17:54:06+02:00 - Seite 355Z

the use of quality gasoline containing
additives that prevent the build-up of carbon
deposits.
After an extended period of using fuels
without such additives carbon deposits can
build up, especially on the intake valves and
in the combustion area, leading to engine
performance problems such as:
R Warm-up hesitation
R Unstable idle
R Knocking/pinging
R Misfire
R Power loss
In areas where carbon deposits may be
encountered due to lack of availability of
gasoline which contains these additives, the
use of Mercedes-Benz approved additives is
recommended.
Contact an authorized Mercedes-Benz Center
or visit www.mbusa.com (USA only) for a
listing of approved products. Follow
directions on the product label.
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.
Coolants
The engine coolant is a mixture of water and
anticorrosion/antifreeze, which provides:
R Corrosion protection
R Freeze protection
R Boiling protection (by increasing the boiling
point)
The cooling system was filled at the factory
with a coolant providing freeze protection to
approximately -35‡ (-37†) and corrosion
protection.
! Add premixed coolant solution only.
Adding water and MB 325.0 Anticorrosion/
Antifreeze separately from each other,
could cause engine damage not covered by
the Mercedes-Benz Limited Warranty.
If the antifreeze mixture is effective to -35‡
(-37† ), the boiling point of the coolant in the
pressurized cooling system is reached at
approximately 266‡ (130†).
The coolant solution must be used year round
to provide the necessary corrosion protection
and increase boil-over protection. Refer to
the Maintenance Booklet for replacement
interval.
Coolant system design and coolant used
determine the replacement interval. The
replacement interval published in the
Maintenance Booklet is only applicable if
MB 325.0 Anticorrosion/Antifreeze solution
or other Mercedes-Benz approved products
of equal specification are used to renew the
coolant concentration or bring it back up to
the proper level.
For information on other Mercedes-Benz
approved products of equal specification,
contact an authorized Mercedes-Benz Center
or visit www.mbusa.com (USA only).
To provide important corrosion protection,
the solution must be at least 50%
anticorrosion/antifreeze (equivalent to
freeze protection to approximately -35‡
[-37†]).
If you use a solution that is more than 55%
anticorrosion/antifreeze (freeze protection
to approximately -49‡ [-45†]), the engine
temperature will increase due to the lower
heat transfer capability of the solution.
Therefore, do not use more than this amount
of anticorrosion/antifreeze.
If the coolant level is low, water and MB 325.0
Anticorrosion/Antifreeze should be used to
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system checked for signs of leakage). Please
make sure the mixture is in accordance with
label instructions.
The water in the cooling system must meet
minimum requirements, which are usually
satisfied by normal drinking water.
If you are not sure about the water quality,
contact an authorized Mercedes-Benz
Center.
Anticorrosion/antifreeze
Your vehicle contains a number of aluminum
parts. The use of aluminum components in
motor vehicle engines necessitates that
anticorrosion/antifreeze coolant used in
such engines be specifically formulated to
protect the aluminum parts. Failure to use
such anticorrosion/antifreeze coolant will
result in a significantly shortened service life.
Therefore, the following product is strongly
recommended for use in your vehicle:
MB 325.0 Anticorrosion/Antifreeze agent.
Before the start of the winter season (or once
a year in hot southern regions), you should
have the anticorrosion/antifreeze
concentration checked.
The coolant is also regularly checked each
time you bring your vehicle to an authorized
Mercedes-Benz Center for service.ModelApproximate freeze protection-35‡ (-37†)-49‡ (-45†)Cooling systemAll models,
except C 63 AMG2.5 US qt (2.4 l)2.8 US qt (2.6 l)C 63 AMG6.2 US qt (5.85 l)6.8 US qt (6.4 l)Fuels, coolants, lubricants, etc.357Technical data204_AKB; 5; 23, en-USd2ureepe,Version: 2.11.8.12009-07-16T17:54:06+02:00 - Seite 357Z