2004 MERCEDES-BENZ CLK55AMG CABRIOLET fuel additives

ContentsTechnical data.................................. 397
Spare parts service ............................ 398
Warranty coverage ............................. 399
Loss of Service and Warranty
Information Booklet...................... 399
Identification labels............................ 400
Layout of poly-V-belt drive ................. 401
CLK 320/CLK 500/CLK 55 AMG . 401
Engine ................................................ 402
Rims and tires .................................... 403
Same size tires ............................. 404
Mixed size tires ............................ 405
Minispare wheel ........................... 406
Electrical system................................ 407
Main dimensions................................ 408
Weights .............................................. 409Fuels, coolants, lubricants, etc. ......... 410
Capacities .................................... 410
Engine oils.................................... 412
Engine oil additives ...................... 412
Air conditioning refrigerant .......... 412
Brake fluid .................................... 412
Premium unleaded gasoline ......... 413
Fuel requirements ........................ 413
Gasoline additives ........................ 413
Coolants....................................... 414
Windshield washer system and
headlamp cleaning system* ......... 416
Consumer information ....................... 417
Uniform tire quality grading ......... 417
Technical terms............................... 419Index................................................. 427

412 Technical dataFuels, coolants, lubricants, etc.Engine oils
Engine oils are specifically tested for their
suitability in our engines. Therefore, only
use engine oils approved by
Mercedes-Benz. Information on approved
engine oils is available in the Factory Ap-
proved Service Products pamphlet, or at
your authorized Mercedes-Benz Center.Please follow FSS recommendations for
scheduled oil changes. Failure to do so
could result in engine damage not covered
by the Mercedes-Benz Limited Warranty.
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.Air conditioning refrigerant
R-134a (HFC) refrigerant and special PAG
lubricating oil are used in the air condition-
ing system.Never use R-12 (CFC) or mineral-based lu-
bricating oil. Otherwise damage to the
system will occur.
Brake fluid
During vehicle operation, the boiling point
of the brake fluid is continuously reduced
through the absorption of moisture from
the atmosphere. Under extremely strenu-
ous operating conditions, this moisture
content can lead to the formation of bub-
bles in the system, thus reducing the sys-
tem’s efficiency.
Therefore, the brake fluid must be re-
placed every two years, preferably in the
spring.
Only brake fluid approved by
Mercedes-Benz is recommended. Your au-
thorized Mercedes-Benz Center will pro-
vide you with additional information.
!Always check the oil filler cap
(page 291) for important information
pertaining to the engine oil needing to
meet a specific Mercedes-Benz specifi-
cation (e.g. MB 229.5). If such informa-
tion is printed on the oil filler cap, only
use an engine oil from the list of ap-
proved engine oils in the Factory Ap-
proved Service Products pamphlet that
meets the specification indicated on
the oil filler cap.
Using engine oils of other specification
may cause the FSS to incorrectly deter-
mine the next service interval and will
result in engine damage not covered by
the Mercedes-Benz Limited Warranty.

413 Technical data
Fuels, coolants, lubricants, etc.
Premium unleaded gasoline
Fuel requirements
Only use premium unleaded gasoline
meeting ASTM standard D 439:

The octane number (posted at the
p um p) m us t be 91 mi n. It i s an a vera ge
of both the Research (R) octane num-
ber and the Motor (M) octane number:
(R+M) / 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 not to 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.
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 loss
Do not blend any specific fuel additives
with fuel. This only results in unnecessary
cost and may be harmful to the engine op-
eration.
!To maintain the engine’s durability and
performance, premium unleaded gaso-
l i n e m u s t b e u s e d . I f p r e m i u m u n l e a d e d
is not available and low octane fuel is
used, follow these precautions:

Have the fuel tank only partially
filled with unleaded regular and fill
up with premium unleaded as soon
as possible.


Avoid full throttle driving and abrupt
acceleration.


Do not exceed an engine speed of
3 000 rpm if the vehicle is loaded
with a light load such as two per-
sons and no luggage.


Do not exceed
2⁄3 of maximum ac-
celerator pedal position if the vehi-
cle is fully loaded or operating in
mountainous terrain.

414 Technical dataFuels, coolants, lubricants, etc.Damage or malfunctions resulting from
poor fuel quality or from blending specific
fuel additives are not covered by the
Mercedes-Benz Limited Warranty.Coolants
The engine coolant is a mixture of water
and anticorrosion / antifreeze, which
provides:

Corrosion protection


Freeze protection


Boiling protection (by increasing the
boiling point)
The cooling system was filled at the factory
with a coolant providing freeze protection
to approximately -22°F (-30°C) and corro-
sion protection.If the antifreeze mixture is effective
to -22°F (-30°C), the boiling point of the
coolant in the pressurized cooling system
is reached at approximately 266°F
(130°C).
The coolant solution must be used year
round to provide the necessary corrosion
protection and increase boil-over protec-
tion. Refer to Service Booklet for replace-
ment interval.
Coolant system design and coolant used
stipulate the replacement interval. The
replacement interval published in the
Service Booklet is only applicable if
MB 325.0 anticorrosion/antifreeze solu-
tion or other Mercedes-Benz approved
products of equal specification (see Facto-
ry Approved Service Products pamphlet)
are used to renew the coolant concentra-
tion or bring it back up to the proper level.To provide important corrosion protection,
the solution must be at least 45% anticor-
rosion/antifreeze (equivalent to freeze
protection to approx. -22°F [-30°C]). If you
use a solution that is more than 55% anti-
corrosion/antifreeze (freeze protection to
approx. -49°F [-45°C]), the engine temper-
ature will increase due to the lower heat
transfer capability of the solution. There-
fore, do not use more than this amount of
anticorrosion/antifreeze.
If the coolant level is low, water and MB
Anticorrosion /Antifreeze should be used
to bring it up to the proper level (have cool-
ing system checked for signs of leakage).
Please make sure the mixture is in accor-
dance 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, con-
sult your authorized Mercedes-Benz
Center.

437 Index
Front airbags 63
Front lamps
Messages in display 335–336
Replacing bulbs 373, 374
Switching on 119
Front seat head restraints
Installing 110
Power seat 110
Removing 110
Front seats
Seat heating* 114
Ventilation* 113
FSS (Flexible Service System) 302, 421
Fuel 285
Additives 413
Fuel reserve warning lamp 317
Gasoline additives 413
Premium unleaded
gasoline 285, 411, 413
Requirements 413
Reserve warning 23
Technical data 410
Fuel additives 413
Fuel consumption statistics
After start 152
Since last reset 153Fuel filler flap 284
Locking 284
Opening 352
Unlocking 284
Fuel requirements 413
Fuel reserve tank
Message in display 334
Fuel tank
Capacity 411
Filler flap 284
Fuels, coolants, lubricants etc.
Capacities 410
Functions (control system) 130, 133
Resetting 140
Fuse box 394, 395
Fuse chart 394
Fuse extractor 396
Fuses 394
Auxiliary fuse box in trunk 396
Fuse box in
engine compartment 395
Fuse box in
passenger compartment 394
Fuse chart 394
Fuse extractor 396
Spare fuses 396G
Garage door opener 27, 265
Gasoline see Fuel
Gasoline additives 413
Gear range 421
Shifting into optimal 158
Gear range limit
Canceling 158
Gear ranges 159
Displaying in Speedometer 159
Limiting 159
Gear selector lever 23, 352
Cleaning 309
Position 23, 157, 160
Unlocking manually 352
Global
Locking 89
Locking with KEYLESS-GO* 94
Unlocking 89
Unlocking with KEYLESS-GO* 94
Global Positioning System (GPS) 421
Glove box 21, 250
Closing 250
Opening 250
Good visibility 167
GPS 421

452 IndexSubmenus
Convenience 149
For settings 131
In control system 133
Instrument cluster 142, 144
Lighting 145
Resetting functions
in Control system 140
Selecting 140
Settings menu 140
Vehicle 148
Sun visors 170
Supplemental Restraint System
(SRS) 424
Switching off
Audio system 186
Automatic central locking
(control system) 149
Engine 54
ESP 80
Hazard warning flasher 124
Headlamps 54Switching on
Audio system 186
Automatic central locking
(control system) 149
ESP 81
Front fog lamps 122
Front lamps 119
Hazard warning flasher 123
Headlamps 47
High beams 123
Parking lamps 119
Rear fog lamp 122
Windshield wipers 48
Symbol (Distronic*)
Distance warning function* 137
Synchronizing
Power windows 214T
Tachometer 23, 127
Overspeed range 127
Overspeed range (CLK 55 AMG) 127
Tail lamps
Cleaning 307
Replacing bulbs 373, 378
Tar stains 305
Technical data 412
Brake fluid 412
Coolant 410
Coolants 414
Electrical system 407
Engine 402
Engine oil 412
Engine oil additives 412
Fuel requirements 413
Fuels 410
Gasoline additives 413
Lubricants 410
Main dimensions 408
Premium unleaded gasoline 413
Rims and tires 403
Weights 409
Windshield and headlamp
washer* system 411, 416