Refrigerant, Air Conditioning; Ron (Research Octane Number); Engine Oil; Air Conditioning Refrigerant - Mercedes-Benz 2010 SLK-Class Operator's Manual

171_AKB; 3; 60, en-US
d2ureepe,

Engine oil additives

! Do not blend oil additives with engine oil.
They may damage the engine. Damage or
malfunctions resulting from blending oil
additives are not covered by the Mercedes-
Benz Limited Warranty.

Air conditioning refrigerant

R134a (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

G
Warning!
During vehicle operation, the boiling point of
the brake fluid is continuously reduced
through the absorption of moisture from the
atmosphere.
Under extremely strenuous operating
conditions, this moisture content can lead to
the formation of bubbles in the system, thus
reducing the system's efficiency.
Therefore, the brake fluid must be replaced
regularly. Refer to your vehicle's Maintenance
Booklet for replacement interval.
Only brake fluid approved by Mercedes-Benz
is recommended. Any authorized Mercedes-
Benz Center will provide you with additional
information.

Premium unleaded gasoline

G
Warning!
Gasoline is highly flammable and poisonous.
It burns violently and can cause serious
personal injury.
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Fuels, coolants, lubricants, etc.
Never allow sparks, flames or smoking
materials near gasoline!
Turn off the engine before refueling.
Whenever you are around gasoline, avoid
inhaling fumes and any skin or clothing
contact. Extinguish all smoking materials.
Direct skin contact with fuels and the
inhalation of fuel vapors are damaging your
health.
! To maintain the engine's durability and
performance, premium unleaded gasoline
must be used.
If premium unleaded gasoline is not
available and low octane gasoline is used,
follow these precautions:
Have the fuel tank only partially filled
R
with unleaded regular gasoline and fill up
with premium unleaded gasoline as soon
as possible.
Avoid full throttle driving and abrupt
R
acceleration.
Do not exceed an engine speed of
R
3 000 rpm if the vehicle is loaded with a
light load such as two persons and no
luggage.
2
Do not exceed / of maximum
R
3
accelerator pedal position if the vehicle
is fully loaded or operating in
mountainous terrain.

Fuel requirements

Only use premium unleaded gasoline. The
octane number (posted at the pump) must be
91 min. It is an average of both the Research
Octane Number (RON) and the Motor Octane
Number (MON): (RON+MON)/2. This is also
known as the ANTI-KNOCK INDEX.
Reformulated gasolines (RFG) and/or
unleaded gasoline containing oxygenates
such as ethanol, TAME, ETBE, IPA, IBA, and
TBA can be used provided the ratio of any one
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