octane MERCEDES-BENZ ML350 2008 W164 Owner's Manual

13 Introduction
Operator’s Manual
Change of address or ownership
If you change your address, be sure to
send in the “Change of Address Notice”
found in the Service and Warranty Informa-
tion Booklet, or simply call the
Mercedes-Benz Customer Assistance
Center (in the USA) at
1-800-FOR-MERCedes, or Customer
Service (in Canada) at 1-800-387-0100. It
is in your own interest that we can contact
you should the need arise.
If you sell your Mercedes, please leave all
literature with the vehicle to make it avail-
able to the next operator.
If you bought this vehicle used, be sure to
send in the “Notice of Purchase of Used
Truck” found in the Service and Warranty
Information Booklet, or call the
Mercedes-Benz Customer Assistance
Center (in the USA) at
1-800-FOR-MERCedes, or Customer
Service (in Canada) at 1-800-387-0100.Operating your vehicle outside the USA
or Canada
If you plan to operate your vehicle in for-
eign countries, please be aware that:

service facilities or replacement parts
may not be readily available,

unleaded gasoline for vehicles with
catalytic converters may not be avail-
able; the use of leaded fuels will
damage the catalysts,

gasoline may have a considerably
lower octane rating, and improper fuel
can cause engine damage.

338 Operation
At the gas station
Briefly push on fuel filler flap1 at the
position indicated by the arrow.
Fuel filler flap1 opens slightly.
Open fuel filler flap1 completely.
Turn fuel filler cap2 counterclock-
wise and hold on to it until possible
pressure is released.
Take off fuel filler cap2.
Set fuel filler cap2 on fuel filler
flap1 as shown.
To prevent fuel vapors from escaping
into open air, fully insert filler nozzle
unit.
Only fill your tank until the filler nozzle
unit cuts out – do not top off or over-
fill.
Replace fuel filler cap2 by turning it
clockwise until it audibly engages.
Close fuel filler flap1.
You should hear the latch close shut.
!The fuel filler cap is tethered to the fuel filler
neck. Do not drop the cap. It could damage the
vehicle paint finish.
Warning!G
Overfilling of the fuel tank may create pres-
sure in the system which could cause a gas
discharge. This could cause the gas to spray
back out when removing the fuel pump noz-
zle, which could cause personal injury.
iMake sure to close the fuel filler flap before
locking your vehicle as the flap locking pin
prevents closing after you have locked the
vehicle.
iLeaving the engine running and the fuel cap
open can cause the yellow fuel tank reserve
warning lamp to flash and the ?malfunction
indicator lamp (USA only) or the± malfunc-
tion indicator lamp (Canada only) comes on.
For more information, see “Practical hints”
(
page 403).
iGasoline engine:
Only use premium unleaded gasoline with a min-
imum Posted Octane Rating of 91 (average of
96 RON/86 MON). Information on gasoline
quality can normally be found on the fuel pump.
Please contact gas station personnel in case
labels on the pump cannot be found.
For more information on gasoline, see “Premium
unleaded gasoline (gasoline engine)”
(
page 526), see “Fuel requirements”
(
page 526), and the Factory Approved Service
Products pamphlet (USA only) or contact an
authorized Mercedes-Benz Light Truck Center.
iDiesel engine:
Only use commercially available vehicular
ULTRA-LOW SULFUR HIGHWAY DIESEL FUEL
(15 ppm SULFUR MAXIMUM). Information on
diesel quality can normally be found on the fuel
pump. Please contact gas station personnel in
case labels on the pump cannot be found.
For more information on diesel fuels, refer to the
Factory Approved Service Products pamphlet
(USA only) or contact an authorized
Mercedes-Benz Light Truck Center.


513 Technical data
Engine
Engine
ModelML 320 CDI (164.1221)
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.
ML 350 (164.1861)
Engine642272
Mode of operationDiesel 4-stroke engine4-stroke engine, gasoline injection
No. of cylinders66
Bore3.27 in (83.00 mm)3.66 in (92.90 mm)
Stroke3.62 in (92.00 mm)3.38 in (86.00 mm)
Total piston displacement182 cu in (2987 cm3)213 cu in (3498 cm3)
Compression ratio17.7:110.7:1
Output acc. to SAE J 1349215 hp/4000 rpm
(160 kW/4000 rpm)268 hp/6000 rpm2
(200 kW/6000 rpm)
2Premium fuel required. Performance may vary with fuel octane rating.
Maximum torque acc. to SAE J 1349400 lb-ft/1600 - 2400 rpm
(543 Nm/1600 - 2400 rpm)258 lb-ft/2400 - 5000 rpm
(350 Nm/2400 - 5000 rpm)
Maximum engine speed4500 rpm6500 rpm
Firing order1-4-2-5-3-61-4-3-6-2-5
Poly-V-belt2 035 mm2 404 mm

514 Technical data
Engine
ModelML 550 (164.1751)
1All data preliminary. The 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.
ML 63 AMG (164.1772)
2The 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.
Engine273156
Mode of operation4-stroke engine, gasoline injection4-stroke engine, gasoline injection
No. of cylinders88
Bore3.86 in (98.00 mm)4.02 in (102.20 mm)
Stroke3.56 in (90.50 mm)3.72 in (94.60 mm)
Total piston displacement333.2 cu in (5461 cm3)378.8 cu in (6208 cm3)
Compression ratio10.7:111.3:1
Output acc. to SAE J 1349382 hp/6000 rpm3
(285 kW/6000 rpm)
3Premium fuel required. Performance may vary with fuel octane rating.
503 hp/6800 rpm3
(375 kW/6800 rpm)
Maximum torque acc. to SAE J 1349391 lb-ft/2800 - 4800 rpm
(530 Nm/2800 - 4800 rpm)465 lb-ft/5200 rpm
(630 Nm/5200 rpm)
Maximum engine speed6500 rpm7200 rpm
Firing order1-5-4-2-6-3-7-81-5-4-2-6-3-7-8
Poly-V-belt2 404 mm2 360 mm

524 Technical data
Fuels, coolants, lubricants
ModelCapacityFuels, coolants, lubricants etc.
Fuel tankAll models25.1 US gal (95.0 l)Gasoline engine:
Premium unleaded gasoline
Minimum Posted Octane 91
(Avg. of 96 RON/86 MON)
Diesel engine:
ULTRA-LOW SULFUR HIGHWAY DIESEL FUEL
(15 ppm SULFUR MAXIMUM)
including a reserve ofAll except
ML 63 AMGapprox. 3.5 US gal (13.0 l)
including a reserve ofML 63 AMGapprox. 4.0 US gal (15.0 l)
Air conditioning systemAll modelsR-134a refrigerant and special PAG lubricant
oil (never R-12)
Windshield washer system and
headlamp cleaning system*All models8.1 US qt (7.7 l)MB Windshield Washer Concentrate1
1Use MB Windshield Washer Concentrate “MB SummerFit” and water for temperatures above freezing or MB Windshield Washer Concentrate “MB SummerFit” and
commercially available premixed windshield washer solvent/antifreeze for temperatures below freezing point. Follow suggested mixing ratios (page 530).

526 Technical data
Fuels, coolants, lubricants
Premium unleaded gasoline
(gasoline engine)
Fuel requirements
Gasoline engine
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 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.
Warning!G
Gasoline is highly flammable and poisonous.
It burns violently and can cause serious
personal injury.
Never allow sparks, flame or smoking mate-
rials near gasoline!
Turn off the engine before refueling.
Whenever you are around gasoline, avoid in-
haling fumes and skin or clothing contact,
extinguish all smoking materials.
Direct skin contact with fuels and the inha-
lation of fuel vapors are damaging to your
health.
!To maintain the engine’s durability and per-
formance, premium unleaded gasoline must be
used. If premium unleaded gasoline is not avail-
able 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 acceler-
ation.

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.

538 Index
Fluids
Automatic transmission fluid 345
Brake fluid 340, 523, 525
Capacities 522
Engine coolant 340, 345, 528
Engine oil 343, 525
Power steering fluid 523
Windshield washer and headlamp
cleaning system* 340, 524, 530
Fog lamps 138, 139
Corner-illuminating front fog
lamps* 140
Messages in the multifunction
display 439
Rear fog lamp 139
Replacing bulbs 469
4-ETS 104
Off-road - 4-ETS 105
Front air bags 77
Front defroster 210, 225
Front lamps see HeadlampsFront passenger front air bag 72, 77
Messages in the multifunction
display 421, 422, 423, 424
Front passenger front air bag off indicator
lamp 31, 83
Front seat head restraints see
Head restraints
Front towing eye 501
Fuel 338
Additives 527
Capacities, Fuel tank 524
Consumption statistics 179
Diesel fuel 524
Filling the tank 337
Fuel filler flap and cap 337, 457
Fuel gauge 29
Fuel tank reserve warning lamp 29,
410
Premium unleaded gasoline 338,
526
Requirements, Octane rating 526Fuel cap
Messages in the multifunction
display 435
Fuel consumption statistics
Since last reset 179
Since start 179
Fuel filler flap 337
Locking/unlocking 337
Opening 337
Opening in an emergency 457
Fuel tank
Capacity 524
Filler flap 337
Fuel, Premium unleaded gasoline 524
Fuels, coolants, lubricants etc. 522
Fuses 504
Fuse box in cargo compartment 505
Fuse box in engine compartment 505
Fuse box in passenger
compartment 506
Fuse chart 448
Replacing 504