1997 MERCEDES-BENZ ML320 Complete Repair Manual

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Page 1105 of 4133

MERCEDES-BENZ ML320 1997 Complete Repair Manual 301 Technical data
Fuels, coolants, lubricants etc.
Model
Capacity
Fuels, coolants, lubricants etc.
Cooling system
approx. 12.7 US qt (12.0 l)
MB Anticorrosion / Antifreeze
Fuel tank
ML 350, ML 500
22

Page 1106 of 4133

MERCEDES-BENZ ML320 1997 Complete Repair Manual 302 Technical dataFuels, coolants, lubricants etc.Engine oils
Engine oils are specifically tested for their
suitability in our engines. Therefore, use
only engine oils approved by
Mercedes-Benz. In

Page 1107 of 4133

MERCEDES-BENZ ML320 1997 Complete Repair Manual 303 Technical data
Fuels, coolants, lubricants etc.
Premium unleaded gasoline
Fuel requirements
Use only premium unleaded meeting
ASTM standard D 439:
The octane number (posted at the
p um p) m us

303 Technical data
Fuels, coolants, lubricants etc.
Premium unleaded gasoline
Fuel requirements
Use only premium unleaded 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 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 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
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
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.

Page 1108 of 4133

MERCEDES-BENZ ML320 1997 Complete Repair Manual 304 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 Warra

Page 1109 of 4133

MERCEDES-BENZ ML320 1997 Complete Repair Manual 305 Technical data
Fuels, coolants, lubricants etc.
Anticorrosion / antifreeze
Your vehicle contains a number of alumi-
num parts. The use of aluminum compo-
nents in motor vehicle engines
necessitat

Page 1110 of 4133

MERCEDES-BENZ ML320 1997 Complete Repair Manual 306 Technical dataFuels, coolants, lubricants etc.Anticorrosion / antifreeze quantityModel
Approx. freeze protection– 35°F (– 37°C)
– 49°F (– 45°C)
ML 350, ML 500,
6.4 US qt (6.0 l)
7.0 US

Page 1111 of 4133

MERCEDES-BENZ ML320 1997 Complete Repair Manual 307 Technical data
Fuels, coolants, lubricants etc.
Windshield washer system and headlamp cleaning system*
Both the windshield washer and headlamp
cleaning system* are supplied from the
windshield w

Page 1112 of 4133

MERCEDES-BENZ ML320 1997 Complete Repair Manual 308 Technical dataConsumer information
Consumer informationThis has been prepared as required of all
manufacturers of passenger cars under
Title 49, Code of U.S. Federal Regulations,
Part 575 purs

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