E85 MERCEDES-BENZ C-Class 2011 W204 Owner's Manual

Refueling
Important safety notes
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.
Direct skin contact with fuels and the
inhalation of fuel vapors are damaging to your
health.
GWarning
Overfilling of the fuel tank may create
pressure in the system which could cause a
gas discharge. This could cause the gasoline
to spray back out when removing the fuel
pump nozzle, which could cause personal
injury.
GWarning!
C 300 and C 300 Sport with automatic
transmission:
Flexible Fuel Vehicles (identified by a label
reading Premium gasoline or E85 only! on
the fuel filler flap):
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.
! Do not use diesel to refuel vehicles with a
gasoline engine. Even small amounts of the
wrong fuel result in damage to the fuel
system and engine.
! Do not switch on the ignition if you
accidentally refuel with the wrong fuel.
Otherwise, the fuel will enter the fuel lines.
Notify a qualified specialist workshop and
have the fuel tank and fuel lines drained
completely.
gasoline
Fuel grade
! You should only refuel with unleaded
premium-grade gasoline as this avoids
damaging the catalytic converter.
Flexible fuel vehicles (recognizable by the
sticker Premium gasoline or E85 only! on
the inside of the fuel filler flap) can be
refueled with E85. For further information
on flexible fuel, see "Fuel".
If engine running problems are apparent,
have the cause checked immediately and
repaired. Excess unburned fuel can
otherwise enter the catalytic converter,
leading to overheating and possibly
causing a fire.
i Only refuel with unleaded premium-grade
gasoline with a specified minimum octane
number of 91 (average value of 96 RON/
86 MON).
Usually you will find information about the
fuel grade on the pump. If you cannot find
the label on the gasoline pump, ask the gas
station staff.
C 300 and C 300 Sport with automatic
transmission: you can recognize flexible
fuel vehicles by the sticker Premium
gasoline or E85 only! on the inside of the
fuel filler flap.
You can find further information under
"Fuel" ( Y page 306), by consulting an
authorized Mercedes-Benz Center or
visiting http://www.mbusa.com (USA
only).
Refueling145Driving and parkingBA 204 USA, CA Edition A 2011; 1; 5, en-UShereepeVersion: 3.0.3.62010-05-20T09:17:30+02:00 - Seite 145Z

Vehicle modelCapacityFuel, coolant,
lubricants etc.Windshield/
headlamp
cleaning
systemC 250 45
C 250 4MATIC 45
C 300 4MATIC
C 350 4MATIC 45
C 63 AMG6.3 US qt (6.0 l)MB windshield
washer
concentrate 47
( Y page 310)
Mixing ratio for
washer fluid
( Y page 310)C 300
C 3503.7 US qt (3.5 l)Fuel
Important safety notesGWarning
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.
Direct skin contact with fuels and the
inhalation of fuel vapors are damaging to your
health.
Premium-grade unleaded gasoline
! To ensure the longevity and full
performance of the engine, only premium-
grade unleaded gasoline must be used.
If premium-grade unleaded gasoline is
unavailable and regular gasoline is used,
observe the following precautions:
R only fill the fuel tank to half full with
regular unleaded gasoline and add the
rest as soon as possible with premium-
grade unleaded gasoline.
R do not drive at the maximum speed.
Ravoid sudden acceleration.
R when the vehicle is carrying a light cargo,
e.g. two passengers without luggage, do
not allow the engine to rev above
3000 rpm.
R when the vehicle is fully loaded or being
operated in mountainous terrain, do not
depress the accelerator pedal further
than 2
/ 3 of the pedal travel.
Flexible fuel vehicles
Important safety notes
All C 300 models with automatic
transmission are flexible fuel vehicles.
Flexible fuel vehicles are identified by a label
reading Premium gasoline or E85 only on
the inside of the fuel filler flap.
Flexible fuel vehicles are designed to operate
on premium unleaded gasoline and ethanol
fuel (E85) or a mixture of these two. Ethanol
fuel (E85) is a mixture of approximately 85%
ethanol and 15% unleaded gasoline.
GWarning
Ethanol fuel (E85) and its vapors are highly
flammable, poisonous and highly
combustible. Ethanol fuel causes serious
injury if it ignites, if it comes into contact with
your skin or if you inhale the vapors. Avoid
inhaling ethanol vapors and ethanol coming
45 Canada only.
47 Mixed with water or premixed washer fluid with antifreeze protection.306Service products and capacitiesTechnical data
BA 204 USA, CA Edition A 2011; 1; 5, en-UShereepeVersion: 3.0.3.62010-05-20T09:17:30+02:00 - Seite 306

into contact with your skin. Before refueling,
extinguish all naked flames. Never allow
sparks or smoking materials near ethanol.
Changing the fuel type
For best performance and driveability, it is
recommended that you use either one or the
other fuel. Avoid alternating regularly
between the two different types of fuel.
When changing the fuel type, make sure:
R the fuel level is below half full.
R the fuel level is above the reserve level. This
is identifiable by the fuel tank reserve
warning lamp not being lit.
R you add more than 5 gallons (20 liters) of
fuel.
R before refueling, you switch off the engine.
R the engine is started and operated for at
least five minutes immediately after
refueling.
These precautions and recommendations
should 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, add at
least 3 gallons (12 liters) of gasoline. This may
improve the running of the engine.
Fuel consumption
Ethanol fuel (E85) contains less energy per
gallon than gasoline. To ensure that the
engine performance with ethanol fuel (E85) 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
ethanol fuel (E85), compared to gasoline.
Maintenance
When you bring your vehicle for maintenance
or repairs, please inform your authorized
Mercedes-Benz Center if you use or have
used ethanol fuel (E85).Low outside temperatures
It is possible that the time required for the
starting procedure will significantly increase
at outside temperatures below 32 ‡ (0 †).
At low outside temperatures, Mercedes-Benz
recommends the use of an auxiliary heater.
For further information, contact an
authorized Mercedes-Benz Center.
Rough idling may also be experienced at low
outside temperatures until the engine is fully
warmed up.
Ethanol fuel (E85) is unsuitable for use when
outside temperatures fall below 14 ‡
(-10 †).
High outside temperatures
At outside temperatures above 95 ‡ (35 †),
the time required for the starting procedure
may increase and be accompanied by rough
idling following the start.
Fuel requirements
Use only premium-grade unleaded gasoline.
The octane number should be at least 91.
Details can be found on the gas pump. The
octane number is the average value of the
Research Octane Number (RON) and Motor
Octane Number (MON): (RON + MON) / 2,
also known as knock resistance.
Reformulated Gasoline (RFG) and/or
unleaded gasoline with additives can be used
if the concentration of the additives in the fuel
does not exceed 10%, e.g.:
R Ethanol
R TAME
R ETBE
R IPA
R TBA
For MTBE, the concentration should not
exceed 15%.
The concentration of methanol in gasoline
including other additives must not exceed 3%.
Using mixtures of methanol and ethanol is not
permitted. Gasohol, a mixture of 10% ethanol
and 90% unleaded gasoline can be used.
Service products and capacities307Technical dataBA 204 USA, CA Edition A 2011; 1; 5, en-UShereepeVersion: 3.0.3.62010-05-20T09:17:30+02:00 - Seite 307Z