Premium-Grade Unleaded Gasoline; Notes; Fuel - Mercedes-Benz 2011 CL-Class Operator's Manual

Service products and capacities
470
Air-
conditioning
system
Windshield/
headlamp
cleaning
system

Fuel

Important safety notes
G
Warning
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:
only fill the fuel tank to half full with
R
regular unleaded gasoline and add the
35 Mixed with water or premixed washer fluid with antifreeze protection.
Vehicle model
All models
All models
Capacity
—
6.9 US qt (6.5 l)
rest as soon as possible with premium-
grade unleaded gasoline.
do not drive at the maximum speed.
R
avoid sudden acceleration.
R
when the vehicle is carrying a light cargo,
R
e.g. two passengers without luggage, do
not allow the engine to rev above
3000 rpm.
when the vehicle is fully loaded or being
R
operated in mountainous terrain, do not
depress the accelerator pedal further
2
than / of the pedal travel.
3
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.:
Ethanol
R
TAME
R
Fuel, coolant,
lubricants etc.
Refrigerant R134a
and special PAG
lubricant (never
R 12)
MB windshield
washer
35
concentrate
( Y page 473)
Mixing ratio for
washer fluid
Y
( page 473)