2008 MERCEDES-BENZ G55AMG engine

423
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) or FSS (Canada
vehicles). For a listing of approved engine
oils and oil filters, refer to the Factory
Approved Service Pr
oducts pamphlet
(USA only), or contact an authorized
Mercedes-Benz Light Truck Center.
Engine oil additives
Air conditioning refrigerant
R-134a (HFC) refrigerant and special PAG
lubricating oil are used in the air condition-
ing system.
Brake fluid
Only brake fluid approved by
Mercedes-Benz is recommended. Any
authorized Mercedes-Benz Light Truck
Center will provide you with additional
information.
!Using engine oils and oil filters of specifi-
cation other than those expressly required for
the Maintenance System (U.S. vehicles) or FSS
(Canada vehicles), or changing of oil and oil filter
at change intervals longer than those called for
by the Maintenance System (U.S. vehicles) or
FSS (Canada vehicles) will result in engine
damage not covered by the Mercedes-Benz
Limited Warranty. Please follow Maintenance System
(U.S. vehicles) or FSS (Canada vehicles)
recommendations for scheduled oil changes.
Failure to do so will result in engine 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.
Warning!G
During vehicle operation, the boiling point of
the brake fluid is continuously reduced
through the absorption of moisture from the
atmosphere. Under extremely strenuous
operating conditions, this moisture content
can lead to the formation of bubbles in the
system, thus reducing the system’s
efficiency.
Therefore, the brake fluid must be replaced
regularly. Refer to your vehicle’s
Maintenance Booklet for replacement
interval.
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424 Technical data
Fuels, coolants, lubricants, etc.
Premium unleaded gasolineFuel requirements
Only use premium unleaded fuel:

The octane number (posted at the
pump) must be 91 min. It is an average
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 mu st not 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.Warning!G
Gasoline is highly flam mable and poisonous.
It burns violently and can cause serious
personal injury.
Never allow sparks, flame or smoking
materials near gasoline!
Turn off the engine before refueling.
Whenever you are around gasoline, avoid
inhaling fumes and skin or clothing contact,
extinguish all smoking materials.
Direct skin contact with fuels and the
inhalation of fuel vapors are damaging to
your health.
!To maintain the engi ne’s durability and
performance, premium unleaded gasoline must
be used. If premium unleaded gasoline is not
available and low octane fuel is used, follow
these precautions:

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

Avoid full throttle driving and abrupt
acceleration.

Do not exceed an engine speed of 3000 rpm
if the vehicle is loaded with a light load such
as two persons and no luggage.

Do not exceed 2/3 of maximum accelerator
pedal position if the vehicle is fully loaded or
operating in mountainous terrain.
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425
Technical data
Fuels, coolants, lubricants, etc.
Gasoline additives
A major concern among engine
manufacturers is ca
rbon build-up caused
by gasoline. Mercedes-Benz recommends
only the use of quality gasoline containing
additives that prevent the build-up of car-
bon deposits.
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 engine performance problems such as:

Warm-up hesitation

Unstable idle

Knocking/pinging

Misfire

Power loss In areas where carbon deposits may be
encountered due to lack of availability of
gasolines which contain 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
pamphlet (USA only) or
contact an autho-
rized Mercedes-Benz Light Truck Center
for a listing of approved 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.
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 -35°F (-37°C) and corro-
sion protection.
If the antifreeze mixture is effective to
-35°F (-37°C), the boiling point of the cool-
ant in the pressurized cooling system is
reached at approxim ately 266°F (130°C).
!Damage or malfunction resulting from poor
fuel quality or from blending additional fuel
additives other than those tested and approved
by us for use on Mercedes-Benz vehicles are not
covered by the Mercedes-Benz Limited
Warranty.! Add premixed coolant solution only. Adding
water and MB 325.0 Anticorrosion/Antifreeze
separately from each other, could cause engine
damage not covered by the Mercedes-Benz
Limited Warranty.
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426 Technical data
Fuels, coolants, lubricants, etc.
The coolant solution must be used year
round to provide the necessary corrosion
protection and increase boil-over protec-
tion. Refer to Maintenance Booklet for
replacement interval.
Coolant system design and coolant used
determine the replacement interval. The
replacement interval published in the
Maintenance Booklet is only applicable if
MB 325.0 Anticorrosion/Antifreeze
solution or other Mercedes-Bent approved
products of equal specification are used to
renew the coolant concen tration or bring it
back up to the proper level.
For information on other Mercedes-Benz
approved products of equal specification,
refer to the Factory Approved Service
Products pamphlet (USA only) or contact
an authorized Mercedes-Benz Light Truck
Center. To provide important corrosion protection,
the solution must be at least
50% anticorrosion/antifreeze (equivalent
to freeze protection to approximately
-35°F [-37°C]). If you use a solution that is
more than 55% anticorrosion/antifreeze
(freeze protection to approximately
-49°F [-45°C]), the engine temperature
will increase due to the lower heat transfer
capability of the so
lution. Therefore,
do not use more than this amount of
anticorrosion/antifreeze.
If the coolant level is low, water and
MB 325.0 Anticorrosion/Antifreeze
should be used to bring it up to the proper
level (have cooling system checked for
signs of leakage). Please make sure the
mixture is in accordance 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,
contact an authoriz ed Mercedes-Benz
Light Truck Center. Anticorrosion/antifreeze
Your vehicle contains a number of
aluminum parts. The use of aluminum
components in motor vehicle engines
necessitates that anticorrosion/antifreeze
coolant used in such engines be
specifically formulated to protect the
aluminum parts. Failure to use such
anticorrosion/antifreeze coolant will
result in a significantly shortened service
life.
Therefore, the followin
g product is strongly
recommended for use in your vehicle:
Mercedes-Benz
325.0 Anticorrosion/Antifreeze agent.
Before the start of the winter season (or
once a year in hot southern regions), you
should have the anticorrosion/antifreeze
concentration checked. The coolant is also
regularly checked each time you bring your
vehicle to an authorized Mercedes-Benz
Light Truck Center for service.
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428 Technical data
Fuels, coolants, lubricants, etc.
Windshield/rear window washer
system and headlamp cleaning system
Fluid for the windshield/rear window
washer system and the headlamp cleaning
system is supplied from the windshield
washer reservoir. It has a capacity of
7.9 US qt (7.5 l).
The windshield washer reservoir is located
on the passenger side of the engine com-
partment (
page 275).
Refill the washer reservoir with
MB Windshield Washer Concentrate
“MB SummerFit” and water
(or concentrate and commercially
available premixed windshield washer
solvent/antifreeze, depending on
ambient temperatures). Windshield/rear wind
ow washer fluid
mixing ratio
For temperatures above freezing point,
use MB Windshield Washer Concentrate
“MB SummerFit” and water:

1 part “MB SummerFit” to 100 parts
water
(1.34 fl oz [40 ml] “MB SummerFit” to
1gal [4.0l] water)
For temperatures below freezing point,
use MB Windshield Washer Concentrate
“MB SummerFit” and commercially
available premixed windshield washer
solvent/antifreeze:

1 part “MB SummerFit” to 100 parts
solvent
(1.34 fl oz [40 ml] “MB SummerFit” to
1 gal [4.0 l] solvent)
Warning!G
Washer solvent/antifree ze is highly flamma-
ble. Do not spill washer solvent/antifreeze
on hot engine parts, because it may ignite
and burn. You could be seriously burned.
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429
Index
A
ABS 27, 87
Indicator lamp 324–325, 327
LOW RANGE mode 89
Messages in display 338
Accelerator position (Automatic transmission) 166
Accessory weight 304
Accident In case of 61
Activating Air conditioning (cooling) 190
Air recirculation mode 188
Anti-theft alarm system 96
Central locking (control system) 155
Defrost 187
Easy-entry/exit feature 156
ESP
®94
Exterior headlamps 56
Exterior lamps 118
Exterior rear view mirror parking posi- tion (Canada only) 178 Headlamps 56
Immobilizer 95
Rear window defroster 181
Windshield defroster 181
Windshield wipers 58
Adding Coolant 275
Engine oil 273
Additional turn signals 376
Adjusting 41 Air distribution 186
Air volume 186
Exterior rear view mirrors 46
Head restraint fore and aft adjustment 43
Head restraint height 43
Head restraint height, rear seats 110
Instrument cluster illumination 130
Interior rear view mirror 46
Mirrors 46
Multicontour seat* 109 Seat backrest tilt 43
Seat cushion depth 109
Seat cushion tilt 43
Seat fore and aft adjustment 43
Seat height 43
Seats 41
Steering column in/out 45
Steering column up/down 45
Steering wheel 44
Advanced TPMS Messages in display 340–341, 359–360
Air bags 70 BabySmart
TM air bag deactivation
system 80
Front 73
Safety guidelines 72
Window curtain air bags 74
Air conditioning 189
Air conditioning refrigerant 423
Air distribution Adjusting 186
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435
Index
Driving on sand 259
Driving systems 197
Cruise control 197
Driving safety systems 87
Rear Parking Assist 200
Rear view camera 203
Rear view camera* 203
Driving through water 257
E
Easy-entry/exit feature Activating 156
EBB 87, 91
Electrical fuses 403
Electrical outlet 223 In cargo compartment 224
In front passenger footwell 223
In rear passenger footwell 224
Electrical system Technical data 417
Electronic Brake Booster (EBB) 91
Electronic Stability Program see ESP
®
Electronic systems Message in display 363
Electronic Traction System (ETS) 90
Emergency calls Tele Aid 230 Emergency, In case of
Roadside Assistance 232
Emergency operation Remote door unlock, Tele Aid 235
Emergency operation (Limp Home Mode) 169
Emergency operations Closing tilt/sliding sunroof 372
Locking the vehicle 369
Opening tilt/sliding sunroof 372
Unlocking the tailgate 369
Unlocking the vehicle 368
Emergency Tensioning Device see ETD
Emission control 263
Emission control information label 411
Ending A call (telephone) 160
Engine Compartment 267
Starting with SmartKey 54
Technical data 413
Turning off with SmartKey 64
Engine cleaning 316
Engine compartment 267 Hood 267 Engine malfunction indicator lamp 27,
328–329
Engine oil 269, 423 Adding 273
Additives 423
Checking level 269
Consumption 269
Messages in display 271, 349–350
Oil dipstick 272
Engine oil level see Oil level
ESP
®27, 87, 91
Messages in display 339
Switching off 93
Switching on 94
Warning lamp 330–331
ETD 68, 77 Safety guidelines 72
Expanding cargo compartment 206
Extending gear range 168
Exterior lamp switch 117
Exterior lamps Delayed shut-off 153
Exterior rear view mirrors Adjusting 46
Exterior view 22
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438 Index
Immobilizer 95Activating 95
Deactivating 95
Infant and child restraint systems 78 Installing 83
LATCH child seat anchors 82
Information button see Tele Aid
Inside rear view mirror Auto-dimming 177
Installing Cargo compartment cover blind 214
Infant and child restraint systems 83
Wiper blades 387
Instructions Loading 208
Instrument cluster 26, 130 Coolant temperature gauge 131
Digital speedometer 140
Illumination 130
Lamps in 324–332
Multifunction display 133
Outside temperature 140
Outside temperature indicator 132
Selecting language 149
Instrument lighting 130
Instruments and controls see Cockpit Interior lighting
Automatic operation 125
Delayed shut-off 154
Manual operation 126
Interior lighting, front 125
Interior lighting, rear 126
Interior rear view mirror Adjusting 46
Intermittent wipe 60 Activating 60
Deactivating 60
Intermittent wiping 59
J
Jack 365
Jump starting 397 K
Key
Messages in display 351
Key, mechanical 368
Key, SmartKey Battery check lamp 102
Checking the batteries 103
Factory setting 102
Global locking 102
Global unlocking 102
Loss of 103
Positions in starter switch 39
Remote control 100
Restoring to factory setting 103
Selective setting 102
Starting the engine 54
Unlocking with 38
Keys 100
Kickdown (Automatic transmission) 166
Kilometers/miles in speedometer 149
Kilopascal 305
Km/h or mph in speedometer 149
L
Labels, identification 410
Lamp bulbs, exterior 375
Lamp in center console 335
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