Mercedes-Benz S350 TURBODIESEL Operator's Manual page 127

Engine Oils
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 maintenance 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.
Brake Fluid
During vehicle operation, the boiling
point of the brake fluid is continuously
reduced through the absorption of
moisture from the atmosphere. Under
extremely hard operating conditions,
this moisture content can lead to the
formation of bubbles in the system thus
reducing the system's efficiency.
The brake fluid must therefore be
replaced every two years, preferably
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
Ozone-friendly HFC-134a refrigerant
and special 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.
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