Mercedes-Benz 2005 CLK-Class Coupe - Manual (Page 452)

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Technical data
Fuels, coolants, lubricants, etc.
Air conditioning refrigerant
R-134a (HFC) refrigerant and special PAG
lubricating oil are used in the air
conditioning system.
Never use R-12 (CFC) or mineral-based
lubricating oil. Otherwise damage to the
system will occur.
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 strenu-
ous operating conditions, this moisture
content can lead to the formation of bub-
bles in the system, thus reducing the sys-
tem’s efficiency.
Therefore, the brake fluid must be
replaced every two years, preferably in the
spring.
Only brake fluid approved by
Mercedes-Benz is recommended. Your
authorized Mercedes-Benz Center will
provide you with additional information.
Premium unleaded gasoline
!
To maintain the engine’s durability and
performance, premium unleaded gaso-
line must be used. If premium unleaded
is not available and low octane fuel is
used, follow these precautions:
ț Have the fuel tank only partially
filled with unleaded regular and fill
up with premium unleaded as soon
as possible.
ț Avoid full throttle driving and abrupt
acceleration.
ț 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.
ț Do not exceed 2 /
3
of maximum ac-
celerator pedal position if the vehi-
cle is fully loaded or operating in
mountainous terrain.