Mercedes-Benz S 320 1999, Owner'S Manual

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Engine oils are specifically tested
for their suitability in our engines.
Therefore, use only engine oils
recommended by Mercedes-Benz.
Information on recommended
brands is available at your
authorized Mercedes-Benz dealer.
Please follow service booklet
recommendations for scheduled oil
changes. Failure to do so could
result in engine damage not
covered by the Mercedes-Benz
Limited Warranty.
Engine Oil Additives
Do not blend oil additives with
engine oil. They may be harmful to
the engine operation.
Damage or malfunctions resulting
from blending oil additives are not
covered by the Mercedes-Benz
Limited Warranty.
Engine Oils
R-134a (HFC) refrigerant and
special PAG lubricating oil is used
in the air conditioner 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. Linder extremely hard
operating conditions, this moisture
content can lead to the formation of
bubbles in the system thus reduc­
ing the system’s efficiency.
The brake fluid must therefore be
replaced every two years, prefer­
ably in the spring.
It is recommended to use only
brake fluid approved by Mercedes-
Benz. Your authorized Mercedes-
Benz dealer will provide you with
additional information.
Air Conditioner Refrigerant
Premium Unleaded Gasoline
Caution!
To maintain the engine’s durability
and performance, premium un­
leaded gasoline must be used. If
premium unleaded is not available
and low octane fuel is used, follow
these precautions:
• have the fuel tank filled only
partially with unleaded regular
and fill up with premium un­
leaded 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 operat­
ing in mountainous terrain.
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