2009 MERCEDES-BENZ SLR fuel

397 Technical data
Fuels, coolants, lubricants, etc.
Fuel requirements
Only use premium unleaded fuel:

The octane number (posted at the
p um p) m us t be 91 mi n. It i s an a vera ge
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.
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 must not 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.
Gasoline additives
A major concern among engine
manufacturers is carbon build-up caused
by gasoline. Mercedes-Benz recommends
only the use of quality gasoline containing
additives that prevent the build up of
carbon deposits.
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:

Warm-up hesitation


Unstable idle


Knocking/pinging


Misfire


Power loss
!
To maintain the engine’s durability and per-
formance, premium unleaded gasoline must be
used. If premium unleaded is not available and
low octane fuel is used, follow these precau-
tions:


Have the fuel tank only partially filled with
unleaded regular gasoline and fill up with
premium unleaded gasoline as soon as
possible.


Avoid full throttle driving and abrupt acceler-
ation.


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.

398 Technical dataFuels, coolants, lubricants, etc.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. Contact an au-
thorized Mercedes-Benz Center or visit
www.mbusa.com (USA only) for a listing of
approved product(s). Follow directions on
product label.
Do not blend other fuel additives with fuel.
This only results in unnecessary cost and
may be harmful to engine operation.
Coolants
The engine coolant is a mixture of water
and anticorrosion/antifreeze, which pro-
vides:

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 -35°F (-37°C) and
corrosion protection.
If the antifreeze mixture is effective to
-35°F (-37°C), the boiling point of the cool-
ant 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. Refer to Maintenance Booklet
for replacement interval.
Coolant system design and coolant used
determine the replacement interval. The
replacement interval published in the
Maintenance Booklet is only applicable if
MB 325.0 Anticorrosion/Antifreeze solu-
tion or other Mercedes-Benz approved
products of equal specification are used to
renew the coolant concentration or bring it
back up to the proper level.
For information on other Mercedes-Benz
approved products of equal specification,
contact an authorized Mercedes-Benz
Center or visit www.mbusa.com
(USA only).
!
Damage or malfunction resulting from poor
fuel quality or from blending additional fuel
additives other than those tested and approved
by us for use on Mercedes-Benz vehicles are not
covered by the Mercedes-Benz Limited Warranty
or by any pre-owned or Extended Limited war-
ranties.
!
Add premixed coolant solution only. Adding
water and MB 325.0 Anticorrosion/Antifreeze
separately from each other, could cause engine
damage not covered by the Mercedes-Benz
Limited Warranty.

399 Technical data
Fuels, coolants, lubricants, etc.
To provide important corrosion protection,
the solution must be at least 50% anticor-
rosion/antifreeze (equivalent to freeze
protection to approximately
-35°F [-37°C]). If you use a solution that is
more than 55% anticorrosion/antifreeze
(freeze protection to approximately
-49°F [-45°C]), the engine temperature
will increase due to the lower heat transfer
capability of the solution. Therefore, do not
use more than this amount of
anticorrosion/antifreeze.If the coolant level is low, water and
MB 325.0 Anticorrosion/Antifreeze
should be used to bring it up to the proper
level (have cooling system checked for
signs of leakage). Please make sure the
mixture is in accordance with label instruc-
tions.
The water in the cooling system must meet
minimum requirements, which are usually
satisfied by normal drinking water. If you
are not sure about the water quality, con-
sult an authorized Mercedes-Benz Center.

400 Technical dataFuels, coolants, lubricants, etc.Anticorrosion/antifreeze
Your vehicle contains a number of alumi-
num parts. The use of aluminum compo-
nents in motor vehicle engines
necessitates that anticorrosion/antifreeze
coolant used in such engines be specifical-
ly formulated to protect the aluminum parts. Failure to use such anticorro-
sion/antifreeze coolant will result in a
significantly shortened service life.
Therefore, the following product is strongly
recommended for use in your vehicle:
MB 325.0 Anticorrosion/Antifreeze agent.Before the start of the winter season (or
once a year in hot southern regions), you
should have the anticorrosion/antifreeze
concentration checked. The coolant is also
regularly checked each time you bring your
vehicle to an authorized Mercedes-Benz
Center for service.
Anticorrosion/antifreeze quantity
Approximate freeze protection
-35°F (-37°C)
-49°F (-45°C)
Main cooling system
5.2 US qt (5.0 l)
5.8 US qt (5.5 l)
Low temperature cooling systemMercedes-Benz SLR McLaren Roadster
2.6 US qt (2.5 l)
2.9 US qt (2.75 l)
Mercedes-Benz SLR McLaren Roadster 722 S
3.2 US qt (3.0 l)
3.5 US qt (3.3 l)

401 Technical data
Fuels, coolants, lubricants, etc.
Windshield washer system and head-lamp cleaning system
Both the windshield washer system and
headlamp cleaning system are supplied
from the windshield washer reservoir.
The windshield washer reservoir has a
capacity of approximately 7.4 US qt (7 l).
Refill the reservoir with MB Windshield
Washer Concentrate and water (or con-
centrate and commercially available
premixed windshield washer sol-
vent/antifreeze, depending on ambient
temperatures).Windshield and headlamp washer fluid
mixing ratio
For temperatures above freezing point, use
MB Windshield Washer Concentrate
“MB SummerFit” and water:


1 part “MB SummerFit” to 100 parts
water
(1.34 fl oz [40 ml] “MB SummerFit” to
1gal [4.0l] water)
For temperatures below freezing point, use
MB Windshield Washer Concentrate
“MB SummerFit” and commercially avail-
able premixed windshield washer
solvent/antifreeze:


1 part “MB SummerFit” to 100 parts
solvent
(1.34 fl oz [40 ml] “MB SummerFit” to
1 gal [4.0 l] solvent)
Warning!
G
Washer solvent/antifreeze is highly flamma-
ble. Do not spill washer solvent/antifreeze
on hot engine parts because it may ignite
and burn. You could be seriously burned.

405 Technical terms
Instrument cluster
The displays and indicator/warning
lamps in the driver’s field of vision, in-
cluding the tachometer, speedometer,
engine temperature and fuel gauge.
Kickdown
Depressing the accelerator past the
point of resistance shifts the transmis-
sion down to the lowest possible. This
very quickly accelerates the vehicle
and should not be used for normal
acceleration needs.
Kilopascal (kPa)
(
page 287)
Maximum load rating
(page 287)
Maximum loaded vehicle weight
(page 287)
Maximum tire inflation pressure
(page 287)MON
(M
otor O
ctane N
umber)
The Motor Octane Number for gasoline
as determined by a standardized
method. It is an indication of a gaso-
line's ability to resist undesired detona-
tion (knocking). The average of both
the MON (Motor Octane Number) and
RON (Research Octane Number) is
posted at the pump, also known as
ANTI-KNOCK INDEX.
Multifunction display
Two display fields in the instrument
cluster used to present information
provided by the control system.
Multifunction steering wheel
Steering wheel with buttons for
operating the control system.
Normal occupant weight
(
page 287)OCS
(O
ccupant C
lassification S
ystem)
The system automatically turns the
front passenger front air bag on or off
based on the classified occupant size
category determined by weight sensor
readings from the seat.
Overspeed range
Engine speeds within the red marking
on the tachometer dial. Avoid this
engine speed range, as it may result in
serious engine damage that is not
covered by the Mercedes-Benz Limited
Warranty.
Poly-V-belt drive
Drives engine-components (alternator,
AC compressor, etc.) from the engine.

411 Index
Bluetooth
® interface 213
Storage location 210
Body surface 297
Brake
Electro-hydraulic brake system 87
Brake Assist System see BAS
Brake disks
Wear 239
Brake fluid 393, 396
Checking 249
Messages in the multifunction
display 335
Brake lamps 362
High-mounted brake lamp 362
Messages in the multifunction
display 346
Brake pads
Messages in the multifunction
display 339
Wear 239
Brakes 236
Excessive loads 239
Warning lamp 29, 307Break-in period 234
Bulbs
Messages in the multifunction
display 346
Replacing 361
C
CAC 403
California retail buyers and lessees, impor-
tant notice for 15
Call priority, Tele Aid 220
CAN system 403
Capacities and recommended
fuel/lubricants 393
Cargo area see Trunk
Cassette player 154
Catalytic converter 245
CD changer 158
Location 159
CD player 127
Center console
Lower part 32
Upper part 31
Central lockingAutomatic 104, 139
Central locking switch 31
Locking/unlocking from inside 105
Central locking switch 105
Child restraints 60
Children in the vehicle 76
Air bags 63
Indicator lamp, passenger front air
bag 70
Infant and child restraint systems 60,
70, 79
Occupant Classification System
(OCS) 67
Passenger front air bag off indicator
lamp 70, 317
Cigarette lighter 210
Cleaning
Soft top 300
Clock 29, 133
Setting time 134
Closed circuit racing
Brakes 239
Cockpit 26, 403
Cold tire inflation pressure 286

415 Index
Fuel 247
Additives 397
Capacity, Fuel tank 394
Consumption statistics 139, 140
Filler flap 247
Filling the tank 247
Fuel reserve warning lamp 29, 311
Gauge 29
Premium unleaded gasoline 247,
396
Requirements, Octane rating 394,
397
Fuel filler cap
Messages in the multifunction
display 309, 345
Fuel filler flap
Locking/unlocking 247
Fuel reserve
Message in the multifunction
display 345
Fuel reserve warning lamp 29
Fuel system
Message in the multifunction
display 344
Fuel tankCapacity 394
Filler flap 247
Fuels, coolants, lubricants etc. 393
Fuses 376
G
Garage door opener 221
Gasoline see Fuel
GAWR 287
Gear range
Automatic transmission 174
Canceling limit 176
Limiting 174
Shifting into optimal 176, 178
Gear selector lever 32, 169
Gearshift pattern 169
Lock 48, 50, 169, 406
Position 170, 171
Position indicator 170
Shifting procedure 170
Gear selector lever one-touch gearshiftingAutomatic transmission 175
Gearshift
Indicator lamp 29
Program, Manual 175, 178
Global locking/unlocking see Key
Good visibility 181
GPS 404
Gross Axle Weight Rating see GAWR
Gross Vehicle Weight Rating see GVWR
Gross Vehicle Weight see GVW
GVW 287
GVWR 287
H
Hands-free microphone 33
Hazard warning flasher 111
Headlamp switch-off delay see Delayed
switch-off, exterior lamps
Headlamps
Automatic headlamp mode 107
Cleaning lenses 300
Cleaning system 181, 257, 401