Brake Fluid; Engine Oils; Fuel Requirements; Premium Unleaded Gasoline - Mercedes-Benz 560 SL 1986 Owner's Manual

Engine Oils

Engine oils are specifically tested
for their suitability in our engines.
Therefore, use only engine oils re­
commended by us. Information on
recommended brands is available
at any authorized MERCEDES-
BENZ dealer.

Brake Fluid

During vehicle operation, the boiling
point of the brake fluid is conti­
nuously reduced through the
absorption of moisture from the
atmosphere. Under extremely hard
operation conditions, this moisture
content can lead to the formation of
vapor in the system thus reducing
the system's efficiency.
The brake fluid must therefore be
replaced annually, preferably in the
spring.
It is recommended to use only
brake fluid approved by
MERCEDES-BENZ. Your
MERCEDES-BENZ dealer will
provide you with additional
information.

Premium Unleaded Gasoline

Caution!
To maintain the engines durability
and performance, premium unlead­
ed gasoline must be used. If prem­
ium unleaded is not available and
low octane fuel is use, 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 2000 rpm, if the vehicle is
loaded with a light load such as
two persons and no luggage,
• do not exceed % of maximum
accelerator pedal position, if the
vehicle is fully loaded, towing a
trailer or operating in moun­
tainous terrain.

Fuel Requirements

Use only Premium unleaded meet­
ing 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 number and the Motor (M)
octane number: (R+M/2). This is
also known as ANTI-KNOCK INDEX.
Unleaded gasoline containing
oxygenates such as Ethanol, MTBE,
IPA, IBA and TBA can be used pro­
vided the ratio of either one of
these oxygenates to gasoline does
not exceed 10%.
The ratio of Methanol to gasoline
must not exceed 3% plus additional
cosolvents.
Using mixtures of Ethanol and
Methanol is not allowed. MTBE
may, however, be added up to 15%.
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..