2004 MERCEDES-BENZ CLK500 COUPE fuel additives

ContentsTechnical data.................................. 375
Spare parts service ............................ 376
Warranty coverage ............................. 377
Loss of Service and Warranty
Information Booklet...................... 377
Identification labels............................ 378
Layout of poly-V-belt drive ................. 379
CLK 320/CLK 500/CLK 55 AMG . 379
Engine ................................................ 380
Rims and tires .................................... 381
Same size tires ............................. 382
Mixed size tires ............................ 383
Minispare wheel ........................... 384
Electrical system................................ 385
Main dimensions................................ 386
Weights .............................................. 387Fuels, coolants, lubricants, etc. ......... 388
Capacities .................................... 388
Engine oils.................................... 390
Engine oil additives ...................... 390
Air conditioning refrigerant .......... 390
Brake fluid .................................... 390
Premium unleaded gasoline ......... 391
Fuel requirements ........................ 391
Gasoline additives ........................ 391
Coolants....................................... 392
Windshield washer system and
headlamp cleaning system* ......... 394
Consumer information ....................... 395
Uniform tire quality grading ......... 395
Technical terms............................... 397Index................................................. 403

390 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 285) 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.

391 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
operation.
!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.

392 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.

413 Index
F
Fahrenheit
Setting temperature units 142
Fastening the seat belts 40
Fine adjustment
Cruise control 220
Distronic* 227
First aid kit 337
Flat tire 358
Lowering the vehicle 362
Minispare wheel 340
Mounting the Minispare wheel 358
Preparing the vehicle 358
Flexible Service System (FSS) 296, 399
Floormates*
Installing 249
Removing 249
Floormats* 249
Fog lamp, rear 122, 351
Fog lamps
Replacing bulbs 351
Fog lamps, front
Messages in display 329
Replacing bulbs 352
Switching on 122Front airbags 63
Front lamps
Messages in display 329–331
Replacing bulbs 351, 352
Switching on 119
Front seat head restraints
Installing 108
Power seat 108
Removing 108
Front seats
Heating* 114
Ventilation* 113
FSS (Flexible Service System) 296, 399
Fuel 279
Additives 391
Fuel reserve warning lamp 311
Gasoline additives 391
Premium unleaded
gasoline 279, 389, 391
Requirements 391
Reserve warning 23
Technical data 388
Fuel additives 391
Fuel consumption statistics
After start 152
Since last reset 153Fuel filler flap 278
Locking 278
Opening 347
Unlocking 278
Fuel requirements 391
Fuel reserve tank
Message in display 328
Fuel tank
Capacity 389
Filler flap 278
Fuels, coolants, lubricants etc.
Capacities 388
Functions (control system) 130, 133
Resetting 140
Fuse box 372, 373
Fuse chart 372
Fuse extractor 374
Fuses 372
Auxiliary fuse box in trunk 374
F us e box i n engi ne com p art me nt 3 73
Fuse box in
passenger compartment 372
Fuse chart 372
Fuse extractor 374
Spare fuses 374

414 IndexG
Garage door opener 27, 259
Gasoline see Fuel
Gasoline additives 391
Gear range 399
Shifting into optimal 158
Gear range limit
Canceling 158
Gear ranges 159
Displaying in Speedometer 159
Limiting 159
Gear selector lever 23, 347
Cleaning 303
Lock 44
Message in display 319
Position 23, 157, 160
Unlocking manually 347Global
Locking 87
Locking with KEYLESS-GO* 92
Unlocking 87
Unlocking with KEYLESS-GO* 92
Global Positioning System (GPS) 399
Glove box 21, 244
Closing 244
Opening 244
Good visibility 166
GPS 399H
Hands-free microphone 27
Hard plastic trim items
Cleaning 303
Hazard warning flasher 123
Switching off 124
Switching on 123
Head restraints 108
Headlamp cleaning system* 289
Headlamps
Automatic control 120
Bi-Xenon 397
Cleaning 300
Cleaning system* 166, 289
Refilling washer fluid 289
Switching off 53
Switching on 47
Washer fluid 394
Washer system* 394
Headliner
Cleaning 303
Heated seats* 114
Height adjustment
Head restraints 36

429 Index
Switching on
Audio system 186
Automatic central locking
(control system) 149
ESP 80
Front fog lamps 122
Front lamps 119
Hazard warning flasher 123
Headlamps 47
High beams 123
Parking lamps 119
Rapid seat heating*
with seat ventilation* 115
Rapid seat heating*
without seat ventilation* 114
Rear fog lamp 122
Seat heating*
with seat ventilation* 115
Seat heating*
without seat ventilation* 114
Trunk lid opening limiter*
(control system) 149
Windshield wipers 48Symbol (Distronic*)
Distance warning function* 137
Synchronizing
Power windows 213
Sliding/pop-up roof 349
Sliding/pop-up roof* 217T
Tachometer 23, 128
Overspeed range 128
Tail lamps
Cleaning 300
Replacing bulbs 351, 356
Tar stains 299
Technical data 390
Brake fluid 390
Coolant 388
Coolants 392
Electrical system 385
Engine 380
Engine oil 390
Engine oil additives 390
Fuel requirements 391
Fuels 388
Gasoline additives 391
Lubricants 388
Main dimensions 386
Premium unleaded gasoline 391
Rims and tires 381
Weights 387
Windshield and headlamp
washer* system 389, 394