2001 MERCEDES-BENZ C240 engine oil

297 Engine compartment
Te ch n i c a l
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cluster displayPractical hintsCar care Index Hood
Wa r n i n g !
To help prevent personal injury, stay clear of
moving parts when the hood is open and the engine
is running. Be sure the hood is properly closed
before driving. When closing hood, use extreme
caution not to catch hands or fingers.The radiator fan may continue to run for
approximately 30 seconds or even restart after the
engine has been turned off. Stay clear from fan
blades.If you see flames or smoke coming from the engine
compartment, or if the coolant temperature gauge
indicates that the engine is overheated, do not open
the hood. Move away from vehicle and do not open
the hood until the engine has cooled. If necessary,
call a fire department.
The engine is equipped with a transistorized
ignition system. Because of the high voltage it is
dangerous to touch any components (ignition coils,
spark plug sockets, diagnostic socket) of the
ignition system
• with the engine running,
• while starting the engine,
• if ignition is “on” and the engine is turned
manually.

300 Engine compartment
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Checking engine oil level
1Oil filler capTo check the engine oil level, park vehicle on level
ground, with engine at normal operational temperature.
Check engine oil level approximately 5 minutes after
stopping the engine, allowing for the oil to return to the
oil pan.
The engine oil level can be checked via the
multifunction display in the instrument cluster.
Unscrew the oil filler cap and add oil carefully if you
need to top up the oil. Fill quantity between upper and
lower dipstick marking level is approximately 2.1 US qt
(2.0 l). Re-install oil filler cap.
Do not overfill the engine.
Excessive oil must be drained
or siphoned. It could cause damage to engine and
catalytic converter not covered by the Mercedes-Benz
Limited Warranty.
See malfunction and warning messages on page 274 if
an engine oil level display appears on the multifunction
indicator when the engine is running.
Note:
See page 128 for engine oil level indicator.

347 Contents - Technical data
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Technical dataSpare parts service ........................348
Warranty coverage .........................348
Identification labels .......................349
Layout of poly-V-belt drive ............350
Technical data ................................ 351
Fuels, coolants, lubricants etc. -
capacities ...................................355
Engine oils ......................................357Engine oil additives ...................... 357
Air conditioner refrigerant .......... 357
Brake fluid ...................................... 357
Premium unleaded gasoline ........ 358
Fuel requirements ........................ 358
Gasoline additives ......................... 359
Coolants .......................................... 359
Consumer information ................. 361
Uniform tire quality grading ....... 361

355 Fuels, coolants, lubricants etc. - capacities
Te ch n i c a l
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cluster displayPractical hints Car care Index Fuels, coolants, lubricants etc. - capacities
Vehicle components and their respective lubricants must match. Therefore use only brands tested and recommended
by us. Please refer to the Factory Approved Service Products pamphlet, or inquire at your Mercedes-Benz Center.
Capacity Fuels, coolants, lubricants etc.
Engine with oil filter 8.5 US qt (8.0 l) Recommended engine oils
Automatic transmission 8.5 US qt (8.0 l) Automatic transmission fluid
Rear axle 1.2 US qt (1.1 l) Hypoid gear oil SAE 85 W 90
Power steering approx. 1.1 US qt (1.0 l) MB Power steering fluid
Front wheel hubs approx. 2.1 oz (60 g) each High temperature roller bearing grease
Accelerator control linkage Hydraulic fluid
Brake system approx. 0.5 US qt (0.5 l) MB Brake fluid (DOT 4+)
Cooling system approx. 9.5 US qt (10.5 l) MB Anticorrosion / antifreeze
Fuel tank
including a reserve of16.4 US gal (62.0 l)
2.1 US gal (8.0 l)Premium unleaded gasoline: Posted Octane 91
(Avg. of 96 RON / 86 MON)

357 Fuels, coolants, lubricants etc. - capacities
Te ch n i c a l
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cluster displayPractical hints Car care Index Engine oils
Engine oils are specifically tested for their suitability in
our engines. Therefore, use only engine oils
recommended by Mercedes-Benz. Information on
recommended brands is available at your authorized
Mercedes-Benz Center.
Please follow Service Booklet recommendations for
scheduled oil changes. Failure to do so could result in
engine damage not covered by the Mercedes-Benz
Limited Warranty.
Engine oil additives
Do not blend oil additives with engine oil. They may be
harmful to the engine operation.
Damage or malfunctions resulting from blending oil
additives are not covered by the Mercedes-Benz Limited
Warranty.Air conditioner refrigerant
R-134a (HFC) refrigerant and special PAG lubricating oil
is used in the air conditioner 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 hard
operating conditions, this moisture content can lead to
the formation of bubbles in the system thus reducing
the system’s efficiency.
The brake fluid must therefore be replaced every two
years, preferably in the spring.
It is recommended to use only brake fluid approved by
Mercedes-Benz. Your authorized Mercedes-Benz
Center will provide you with additional information.

358 Fuels, coolants, lubricants etc. - capacities
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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 partially with unleaded
regular and fill up with premium unleaded as soon
as possible,
•avoid full throttle driving and abrupt acceleration,
•do not exceed an engine speed of 3000 rpm, if the
vehicle is loaded with a light load such as two
persons and no luggage,
•do not exceed
2/3 of maximum accelerator pedal
position, if the vehicle is fully loaded or operating in
mountainous terrain.Fuel requirements
Use only Premium unleaded meeting 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, IPA, IBA and TBA can be used provided the
ratio of any one of these oxygenates to gasoline does not
exceed 10%, MTBE not to exceed 15%.
The ratio of Methanol to gasoline must not exceed 3%
plus additional cosolvents.
Using mixtures of Ethanol and Methanol is not allowed.
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.

359 Fuels, coolants, lubricants etc. - capacities
Te ch n i c a l
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cluster displayPractical hints Car care Index Gasoline additives
A major concern among engine manufacturers is carbon
build up caused by gasoline. Mercedes-Benz
recommends the use of only quality gasoline containing
additives that prevent the build up of carbon deposits.
After an extended period of using fuels without such
ad ditives , car bon d ep osits c an bui ld up esp eci ally on t he
intake valves and in the combustion area, leading to
engine performance problems such as:
•warm-up hesitation,
•unstable idle,
•knocking / pinging,
•misfire,
•power loss.
Do not blend other specific fuel additives with fuel.
They only result in unnecessary cost, and may be
harmful to the engine operation.
Damage or malfunctions resulting from poor fuel
quality or from blending specific fuel additives are not
covered by the Mercedes-Benz Limited Warranty.Coolants
The engine coolant is a mixture of water and
anticorrosion / antifreeze, which provides:
•corrosion protection,
•freeze protection,
•boiling protection (by increasing the boiling point).
The cooling system was filled at the factory with a
coolant providing freeze protection to approximately
- 22
°F (- 30
°C) and corrosion protection.
If the antifreeze mixture is effective to - 22
°F (- 30
°C),
the boiling point of the coolant in the pressurized
cooling system is reached at approximately 266
°F
(130
°C).
The coolant solution must be used year round to provide
the necessary corrosion protection and increase in the
boil-over protection. You should have it replaced every
3years.
To provide the important corrosion protection, the
solution must be at least 45% anticorrosion / antifreeze
(equals a freeze protection to approximately - 22
°F
(- 30
°C). If you use a solution that is more than 55%
anticorrosion /antifreeze (freeze protection to
approximately - 49
°F (- 45
°C), the engine temperature

365 Index
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car careIndex
BBabySmart
TM airbag deactivation system ..................... 62
Battery ............................................................................. 316
Block heater ....................................................................252
Brake assist system (BAS) ............................................257
CCellular telephone ......................................................... 210
Center console .................................................................. 18
Central locking switch .................................................... 33
Central locking system ................................................... 25
Automatic central locking ......................................... 34
Central locking switch ............................................... 33
Choosing global or selective mode ........................... 27
Doors ............................................................................. 31
General notes ............................................................... 24
Locking and unlocking with remote control .......... 27
Mechanical keys .......................................................... 30
Obtaining replacement keys ..................................... 23
Summer opening/convenience feature ................... 29
Vehicle keys ................................................................. 22
Check regularly and before a long trip ......................266
Checking engine oil level ............................................. 300Climate control ............................................................... 138
Adjustable air outlets,
rear passenger compartment ............................. 159
Air recirculation ........................................................ 144
Basic setting ............................................................... 142
Defrosting ................................................................... 143
Display and controls ................................................. 140
Dust filter ................................................................... 141
Economy mode .......................................................... 145
Front center console storage
compartment ventilation ..................................... 158
Residual engine heat utilization ............................. 145
Special settings ......................................................... 142
Windows fogged up on the inside .......................... 143
Windows fogged up on the outside ........................ 144
COMAND, radio, telephone and two-way radio ......... 218
Combination switch ....................................................... 134
Control and operation of radio transmitters .............. 218
Coolant level ...................................................................301
Coolant temperature gauge ..........................................124
Cruise control ................................................................ 254
Cup holder ....................................................................... 197