Mercedes-Benz Cls 500, Operator'S Manual

Page: 434 / 475

433
Technical data
Fuels, coolants, lubricants etc.
Premium unleaded gasoline Gasoline additives
A major concern among engine manufac-
turers is carbon build-up caused by gaso-
line. Mercedes-Benz recommends only the
use of quality gasoline containing additives
that prevent the build-up of carbon depos-
its.
After an extended period of using fuels
without such additives, carbon deposits
can build up especially on the intake valves
and in the combustion area, leading to
engine performance problems such as:
앫
Warm-up hesitation
앫
Unstable idle
앫
Knocking/pinging
앫
Misfire
앫
Power loss
In areas where carbon deposits may be
encountered due to lack of availability of
gasolines which contain these additives,
Mercedes-Benz recommends the use of
additives approved by us for use on
Mercedes-Benz vehicles. Refer to Factory
Approved Service Products Pamphlet for a
listing of approved product(s). Follow di-
rections on product label.
Do not blend any specific fuel additives
with fuel. This only results in unnecessary
costs and may be harmful to the engine
operation.
Damage or malfunction resulting from
poor fuel quality or from blending addition-
al fuel additives other than those tested
and approved by us for use on
Mercedes-Benz vehicles listed in the Fac-
tory Approved Service Products pamphlet
are not covered by the Mercedes-Benz
Limited Warranty.
!
To maintain the engine’s durability and
performance, premium unleaded gaso-
line must be used. If premium unleaded
gasoline is not available and low octane
fuel is used, follow these precautions:
앫
Have the fuel tank only partially
filled with unleaded regular and fill
up with premium unleaded as soon
as possible
앫
Avoid full throttle driving and abrupt
acceleration
앫
Do not exceed an engine speed of
3000 rpm if the vehicle is loaded
with a light load such as two per-
sons and no luggage
앫
Do not exceed
2
/
3
of maximum
accelerator pedal position if the
vehicle is fully loaded or operating
in mountainous terrain