MERCEDES-BENZ G55AMG 2006 W463 Owner's Manual

370 Technical data
Engine
G 500 (463.249)1
1The quoted data apply only to the standard vehicle. See an authorized Mercedes-Benz Light Truck Center for the corresponding data of all special bodies and special
equipment.
G55AMG (463.271)1
Engine113113
Mode of operation4-stroke engine, gasoline injection4-stroke engine, gasoline injection
No. of cylinders88
Bore3.82 in (97.00 mm)3.82 in (97.00 mm)
Stroke3.31 in (84.00 mm)3.60 in (92.00 mm)
Total piston displacement303.0 cu in (4966 cm3)331.8 cu in (5439 cm3)
Compression ratio10:19:1
Output acc. to SAE J 1349292 hp / 5500 rpm2
(218 kW / 5500 rpm)
2Premium fuel required. Performance may vary with fuel octane rating.
469 hp / 6100 rpm2
(350 kW / 6100 rpm)
Maximum torque acc. to SAE J 1349336 lb-ft / 2800 - 4000 rpm
(456 Nm / 2800 - 4000 rpm)516 lb-ft / 2650 - 4000 rpm
(700 Nm / 2650 - 4000 rpm)
Maximum engine speed6300 rpm6500 rpm
Firing order1-5-4-2-6-3-7-81-5-4-2-6-3-7-8
Poly-V-belt2380 mmBelt one: 1289 mm
Belt two: 2449 mm

371 Technical data
Rims and tires
Rims and tires
Use only tires and rims which have been
specifically developed for your vehicle and
tested and approved by Mercedes-Benz.
Other tires and rims can have detrimental
effects, such as:

Poor handling characteristics

Increased noise

Increased fuel consumption
!
Moreover, tires and rims not approved
by Mercedes-Benz may, under load,
exhibit dimensional variations and dif-
ferent tire deformation characteristics
that could cause them to come into
contact with the vehicle body or axle
parts. Damage to the tires or the vehi-
cle may be the result.
i
Further information on tires and rims is
available at any authorized
Mercedes-Benz Light Truck Center.
A placard with the recommended tire
inflation pressures is located on the
driver’s door B-pillar. Some vehicles
may have supplemental tire inflation
pressure information for driving at high
speeds (
page 261) or for vehicle
loads less than the maximum loaded
vehicle condition. If such information is
provided, it can be found on the placard
located on the inside of the fuel filler
flap. The tire inflation pressure should
be checked regularly and should only
be adjusted on cold tires. Follow tire
manufacturer’s maintenance recom-
mendation included with vehicle.

372 Technical data
Rims and tires
Rims and Tires
G500G55AMG
Rims (light alloy)71/2 J x18 H291/2 J x 18 EH2
Wheel offset1.69 in (43 mm)1.97 in (50 mm)
All season tires (radial-ply tires)265/60 R18 110V M+S285/55 R18 113V M+S1
1Must not be used with snow chains.

373 Technical data
Rims and tires
Spare wheels
G500G55AMG
Rims (light alloy)71/2 J x18 H271/2 J x18 H2
Wheel offset1.69 in (43 mm)1.69 in (43 mm)
All season tires (radial-ply tires)265/60 R18 110V M+S265/60 R18 110V M+S

374 Technical data
Electrical system
G500G55AMG
Generator (alternator)14 V/150 A14 V/180 A
Starter motor12 V/1.7 kW12 V/1.7 kW
Battery12 V/90 Ah12 V/90 Ah
Spark plugsBosch F 8 DPER
Beru 14 FGH 8 DPUR X 2NGK ILFR6A
Electrode gap0.039 in (1.0 mm)0.039 in (1.0 mm)
Tightening torque15 – 22 lb-ft (20 – 30 Nm)15 – 22 lb-ft (20 – 30 Nm)

375 Technical data
Main dimensions, vehicle weights and ratings
Main dimensions, vehicle weights and ratings
Main dimensions
Vehicle weights and ratings
G500G55AMG
Overall vehicle length
(inc. spare wheel)185.6 in (4715 mm)185.6 in (4715 mm)
Overall vehicle width71.3 in (1811 mm)73.4 in (1864 mm)
Overall vehicle height77.8 in (1977 mm)77.8 in (1977 mm)
Wheel base112.2 in (2850 mm)112.2 in (2850 mm)
Ground clearance8.3 in (211 mm)8.3 in (211 mm)
Turning radius523.6 in (13.3 m)523.6 in (13.3 m)
Track, front and rear59.6 in (1515 mm)59.1 in (1501 mm)
G500G55AMG
Gross Vehicle Weight Rating1
1GVWR is the maximum permissible vehicle weight. Gross Vehicle Weight (GVW) comprises weight of vehicle including fuel, tools, spare wheel, installed accessories,
passengers, cargo and trailer tongue. It must never exceed the GVWR.
6615 lb (3000 kg)6615 lb (3000 kg)
Gross Axle Weight Rating, front2
2GAWR is the maximum permissible axle weight.
3110 lb (1410 kg)3200 lb (1450 kg)
Gross Axle Weight Rating, rear23965 lb (1800 kg)3965 lb (1800 kg)

376 Technical data
Fuels, coolants, lubricants, etc.
Capacities
Vehicle components and their respective
lubricants must match.Therefore use only products tested and ap-
proved by Mercedes-Benz.Please refer to the Factory Approved
Service Products pamphlet, or inquire at
an Mercedes-Benz Light Truck Center.
ModelCapacityFuels, coolants, lubricants, etc.
Engine with oil filterG500
G55AMG8.5 US qt (8.0 l)
9.0 US qt (8.5 l)Approved engine oils
Automatic transmission9.0 US qt (8.5 l)MB Automatic Transmission Fluid
Transfer case2.96 US qt (2.8 l)MB part no. A 001 989 28 03 10
Differential lock mechanism0.47 - 0.63 US qt
(0.45 - 0.6 l)Brake fluid DOT 3+4, SAE J1703
Front axleG500
G55AMG1.5 US qt (1.4 l)
1.5 US qt (1.4 l)Hypoid gear oil SAE 85W-90
Hypoid gear oil Castrol SAF-XJ
Rear axleG500
G55AMG1.9 US qt (1.8 l)
1.9 US qt (1.8 l)Hypoid gear oil SAE 85W-90
Hypoid gear oil Castrol SAF-XJ
Power steeringapprox. 1.06 US qt (1.0 l)MB Power Steering Fluid, or
approved Dexron III ATF
Front wheel hubsapprox. 1.5 oz (43 g) eachHigh temperature roller bearing grease
Fuel tank
including a reserve ofG500
G55AMG25.4 US gal (96.0 l)
25.1 US gal (95.0 l)
3.4 US gal (13.0 l)Premium unleaded gasoline:
Minimum Posted Octane 91
(average of 96 RON / 86 MON)

377 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 re-
quired 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 Products pamphlet, or
contact an authorized Mercedes-Benz
Light Truck Center.Using engine oils and oil filters of specifica-
tion other than those expressly required
for the Maintenance System (U.S. vehi-
cles) 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) recom-
mendations for scheduled oil changes.
Failure to do so will result in engine dam-
age not covered by the Mercedes-Benz
Limited Warranty.
ModelCapacityFuels, coolants, lubricants, etc.
Cooling systemG 500
G55AMGapprox. 12.7 US qt (12.0 l)
approx. 13.4 US qt (12.7 l)MB Anticorrosion/Antifreeze
Air conditioning systemR-134a refrigerant and
special PAG lubricant oil (never R-12)
Windshield/rear window washer system
and headlamp cleaning systemapprox. 7.9 US qt (7.5 l)MB Windshield Washer Concentrate
and water1
1Use MB Windshield Washer Concentrate “S” and water for temperatures above freezing point or MB Windshield Washer Concentrate “S” and commercially available
premixed windshield washer solvent / antifreeze for temperatures below freezing point. Follow suggested mixing ratios (page 382).

378 Technical data
Fuels, coolants, lubricants, etc.
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 lubricating 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.
Only brake fluid approved by
Mercedes-Benz is recommended. Your au-
thorized Mercedes-Benz Light Truck Cen-
ter will provide you with additional
information.Premium unleaded gasoline
Warning!G
Under extremely strenuous operating condi-
tions, this moisture content can lead to the
formation of bubbles in the system, thus re-
ducing the system’s efficiency.
Therefore, the brake fluid must be replaced
every two years, preferably in the spring.
Warning!G
Gasoline is highly flammable and poisonous.
It burns violently and can cause serious inju-
ry. Whenever you are around gasoline, avoid
inhaling fumes and skin contact, extinguish
all smoking materials. Never allow sparks,
flame or smoking materials near gasoline!

379 Technical data
Fuels, coolants, lubricants, etc.
Fuel requirements
Only use premium unleaded fuel:

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 must 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.
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
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
!
To maintain the engine’s durability and
performance, premium unleaded gaso-
line must be used. If premium unleaded
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
3000 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.