Mercedes-Benz 420 SEL 1988, Руководство пользователя

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Engine oils are specifically tested for
their suitability in our engines. There­
fore, use only engine oils recom­
mended by us. Information on recom­
mended brands is available at your
authorized MERCEDES-BENZ dealer.
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 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 authorized MERCEDES-BENZ
dealer will provide you with additional
information.
Engine Oils
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 par­
tially with unleaded regular and fill
up with premium unleaded as soon
as possible,
• avoid full throttle driving and ab­
rupt acceleration,
• do not exceed an engine speed of
2000 rpm, if the vehicle is loaded
with a light load such as two per­
sons and no luggage,
• do not exceed % of maximum ac­
celerator pedal position, if the ve­
hicle is fully loaded or operating in
mountainous terrain.
Use only Premium unleaded meeting
ASTM standard D 439:
The octane number (posted at the
pump) must be 91 min. It is an aver­
age of both, the Research (R) octane
number and the Motor (M) octane
number: [(R+M)/2J. This is also known
as ANTI-KNOCK INDEX.
Unleaded gasoline containing oxyge­
nates such as Ethanol, MTBE, IPA,
I BA and TBA can be used provided
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..
Fuel Requirements