2007 MERCEDES-BENZ CL-CLASS fuel additives

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MERCEDES-BENZ CL-CLASS 2007 Owners Manual Contents
Technical data.................................. 671
Parts service ...................................... 672
Warranty coverage ............................. 673
Loss of Service and Warran

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MERCEDES-BENZ CL-CLASS 2007 Owners Manual 686 Technical data
Fuels, coolants, lubricants, etc.
Engine oils
Engine oils are specifically tested for their
suitability in our engines and durability for
our service intervals. Therefore, only us

686 Technical data
Fuels, coolants, lubricants, etc.
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 Maintenance
System (U.S. vehicles, Canada vehicles,
depending on vehicle production date) or
FSS PLUS (Canada vehicles, depending on
vehicle production date). For a listing of
approved engine oils and oil filters, refer to
the Factory Approved Service Products
pamphlet (USA only), or contact an autho-
rized Mercedes-Benz Center.Engine oil additives
Air conditioning refrigerant
R-134a (HFC) refrigerant and special PAG
lubricating oil are used in the air condition-
ing system.
!Using engine oils and oil filters of
specification other than those expressly
required for the Maintenance System
(U.S. vehicles, Canada vehicles, depending on
vehicle production date) or FSS PLUS (Canada
vehicles, depending on vehicle production date),
or changing of oil and oil filter at change intervals
longer than those called for by the Maintenance
System (U.S. vehicles, Canada vehicles, depend-
ing on vehicle production date) or FSS PLUS
(Canada vehicles, depending on vehicle produc-
tion date) will result in engine or emission control
system damage not covered by the
Mercedes-Benz Limited Warranty.
Please follow Maintenance System
(U.S. vehicles, Canada vehicles, depending on
vehicle production date) or FSS PLUS (Canada
vehicles, depending on vehicle production date)
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.
!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.
!Never use R-12 (CFC) or mineral-based
lubricating oil. Otherwise damage to the system
will occur.
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MERCEDES-BENZ CL-CLASS 2007 Owners Manual 688 Technical data
Fuels, coolants, lubricants, etc.
Fuel requirements
Only use premium unleaded fuel:
The octane number (posted at the
pu m p) m us t b e 91 mi n. It is an a vera ge
of both the

688 Technical data
Fuels, coolants, lubricants, etc.
Fuel requirements
Only use premium unleaded fuel:
The octane number (posted at the
pu m p) m us t b e 91 mi n. It is an a vera ge
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.
Unleaded gasoline containing oxygenates
such as ethanol, 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 co-solvents.
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.
Gasoline additives
A major concern among engine manufac-
turers is carbon build-up caused by gaso-
line. Mercedes-Benz recommends only the
use of quality gasoline containing additives
that prevent the build-up of carbon depos-
its.
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 en-
gine performance problems such as:
Warm-up hesitation
Unstable idle
Knocking/pinging
Misfire
Power lossIn areas where carbon deposits may be en-
countered due to lack of availability of gas-
olines which contains these additives,
Mercedes-Benz recommends the use of
additives approved by us for use on
Mercedes-Benz vehicles. Refer to the
Factory Approved Service Products pam-
phlet (USA only) or contact an authorized
Mercedes-Benz Center of listing of ap-
proved product(s). Follow directions on
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 addi-
tives other than those tested and approved by us
for use on Mercedes-Benz vehicles are not cov-
ered by the Mercedes-Benz Limited Warranty.
For a listing of approved products, refer to the
Factory Approved Service Products pamphlet
(USA only) or contact an authorized
Mercedes-Benz Center.
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MERCEDES-BENZ CL-CLASS 2007 Owners Manual 701 Index
F
Favorite button 231
First aid kit 632
Flat tire 649
Jacking up the vehicle 650
Lowering the vehicle 654
Mounting the Minispare wheel 649
Preparing the vehicle 649
Flexible Service System s

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