2003 MERCEDES-BENZ ML320 Motor oil

287 Technical data
Fuels, coolants, lubricants etc.
Fuel requirements
Use only premium unleaded meeting
ASTM standard D 439:

The octane number (posted at the
pump) must be 91 min. It is an average
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 other specific fuel additives
with fuel. This only results in unnecessary
costs and may be harmful to the engine op-
eration.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 pro-
vides:

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
-22°F (-30°C), the boiling point of the cool-
ant in the pressurized cooling system is
reached at approximately 266°F (130°C).

288 Technical dataFuels, coolants, lubricants etc.The coolant solution must be used year
round to provide the necessary corrosion
protection and increase in boil-over pro-
tection. You should have it replaced every
3years.
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%
anticorrosion/antifreeze (freeze protec-
tion to approx. - 49°F [-45°C]), the engine
temperature will increase due to the lower
heat transfer capability of the solution.
Therefore, 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 that the mixture is in ac-
cordance 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 Light
Truck Center.
Anticorrosion/antifreeze
Your vehicle contains a number of alumi-
num parts. The use of aluminum compo-
nents in motor vehicle engines
necessitates that anticorrosion/antifreeze
coolant used in such engines be specifical-
ly formulated to protect the aluminum
parts. (Failure to use such anticorro-
sion/antifreeze coolant will result in a sig-
nificantly shortened service life.)
Therefore, the following product is strongly
recommended for use in your vehicle:
Mercedes-Benz 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 your authorized Mercedes-Benz
Light Truck Center for service.

310 IndexMB Tex upholstery
Cleaning 222
MCS
Modular Control System 294
Mechanical key 242
Memory function 99, 295
Storing exterior rear view mirror
parking positions 100
Memory function* 100
Recalling positions from memory 100
Mirror
Inside rear view mirror 38
Mirrors
Activating exterior mirror parking posi-
tion 101
Adjusting 38
Automatic antiglare for rear view
mirror 119
Exterior rear view mirror 38
Storing exterior rear view mirror
parking position 101
MON 200
MON (Motor Octane Number) 295
Monitoring reach
Parktronic* 150
Multifunction display 295N
Night security illumination 104
Deactivation temporarily 104
Setting time 104
O
Occupant safety 54
Children and airbags 56
Children in the vehicle 63
Fastening the seat belt 40
Infant and child restraint systems 63
LATCH child seat mounts 68
Seat belts 40, 57
Odometer display 111
Odometer, main 25
Off-road driving
Checklist 187, 191
Crossing obstacles 190
Driving instructions off-road
driving 186
Driving through water 189
Returning 191
Rules 186
Special driving features 186
Steep terrain 187Oil
Adding 204, 205
Checking level 203
Consumption 203
Dipstick 203, 205
Filler neck 205
Viscosity 294
Oil dipstick 205
Oil level
Checking 201
One-touch gearshifting 113
Canceling gear range limit 114
Downshifting 113
Upshifting 114
Opening
Doors from the inside 86
Fuel filler flap 200
Fuel filler flap manually 244
Glove box 152
Hood 202
Liftgate 85, 87
Liftgate from inside 87
Liftgate from outside 87
Rear quarter windows 136
Side windows 135
Sliding/pop-up roof 246