Mercedes-Benz 300 SL Operator's Manual page 140

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
Air Conditioner Refrigerant
(Selected vehicles -see underhood
label).
If this vehicle is equipped with an air
conditioner system that uses HFC-134a
(ozone-friendly hydro-fluorocarbon)
refrigerant and special lubricating oil,
never use R-12 (CFC) or mineral-based
lubricating oil, otherwise damage to the
system will occur.
Repairs should always be performed by
a qualified technician, and refrigerant
should be collected in a recovery
system for recycling.
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.
Premium Unleaded Gasoline Caution!
To maintain the engine's durability and
performance, premium unleaded
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,
2
• do not exceed
/ of maximum
3
accelerator pedal position, if the
vehicle is fully loaded or operating
in mountainous terrain.
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