2005 MERCEDES-BENZ SL500 octane

13 Introduction
Operator’s Manual
Operating your vehicle outside the USA or Canada
If you plan to operate your vehicle in for-
eign countries, please be aware that:

Service facilities or replacement parts
may not be readily available,


unleaded gasoline for vehicles with cat-
alytic converters may not be available;
the use of leaded fuels will damage the
catalysts,


gasoline may have a considerably low-
er octane rating, and improper fuel can
cause engine damage.Certain Mercedes-Benz models are avail-
able for delivery in Europe under our Euro-
pean Delivery Program. For details, consult
an authorized Mercedes-Benz Center or
write to:
In the USA:
Mercedes-Benz USA, LLC
European Delivery Department
One Mercedes Drive
Montvale, NJ 07645-0350
In Canada:
Mercedes-Benz Canada, Inc.
European Delivery Department
98 Vanderhoof Avenue
Toronto, Ontario M4G 4C9

268 OperationAt the gas station
Replace the fuel cap by turning it to the
right.
You will hear when the fuel cap is tight-
ened.

Close the fuel filler flap.
You should hear the latch close shut.Warning!
G
Overfilling of the fuel tank may create pres-
sure in the system which could cause a gas
discharge. This could cause the gas to spray
back out when removing the fuel pump noz-
zle, which could cause personal injury.
iOnly use premium unleaded gasoline
with a minimum Posted Octane Rating
of 91 (average of 96 RON / 86 MON).
Information on gasoline quality can
normally be found on the fuel pump.
For more information on gasoline, see
“Premium unleaded gasoline”
(page 434) or the Factory Approved
Service Pamphlet.
iLeaving the engine running and the fuel
cap open can cause the engine mal-
function indicator lamp ú (USA
only) or the engine malfunction indica-
tor lamp ± (Canada only) to illumi-
nate.
For more information, see the “Practi-
cal hints” section (
page 327).


420 Technical dataEngineModel
SL 500 (230.475)
1
SL 600 (230.476)
1
Engine
113
275
Mode of operation
4-stroke engine, gasoline injection
4-stroke engine, gasoline injection
No. of cylinders
8
12
Bore
3.82 in (97.00 mm)
3.23 in (82.00 mm)
Stroke
3.31 in (84.00 mm)
3.43 in (87.00 mm)
Total piston displacement
303.0 cu in (4966 cm
3)
336.4 cu in (5 513 cm
3)
Compression ratio
10:1
9:1
Output acc. to SAE J 1349
302 hp / 5 600 rpm
2
(225 kW / 5 600 rpm)
493 hp /5 000 rpm
2
(368 kW / 5 000 rpm)
Maximum torque acc. to SAE J 1349
339 lb-ft / 2 700 rpm
(460 Nm / 2700 rpm)
590 lb-ft /3 500 rpm
(800 Nm /3 500 rpm)
Maximum engine speed
6000 rpm
5750 rpm
Firing order
1-5-4-2-6-3-7-8
1-12-5-8-3-10-6-7-2-11-4-9
Poly-V-belt
2390 mm
2335 mm
1The quoted data apply only to the standard vehicle. See an authorized Mercedes-Benz Center for the corresponding data of all special bodies and special equipment.2Premium fuel required. Performance may vary with fuel octane rating.

421 Technical data
Engine
Model
SL 55 AMG (230.474)
1
SL 65 AMG (230.479)
1
Engine
113
275
Mode of operation
4-stroke engine, gasoline injection
4-stroke engine, gasoline injection
No. of cylinders
8
12
Bore
3.82 in (97.00 mm)
3.25 in (82.60 mm)
Stroke
3.60 in (92.00 mm)
3.66 in (93.00 mm)
Total piston displacement
331.8 cu in (5439 cm
3)
364.9 cu in (5980 cm
3)
Compression ratio
9:1
9:1
Output acc. to SAE J 1349
493 hp / 6 100 rpm
2
(368 kW / 6 100 rpm)
603 hp / 4 400-5 100 rpm
2
(450 kW / 4 800-5 100 rpm)
Maximum torque acc. to SAE J 1349
516 lb-ft / 2 750-4000 rpm
(700 Nm / 2 750-4000 rpm)
738 lb-ft / 2 000-4000 rpm
(1 000 Nm / 2 000-4000 rpm)
Maximum engine speed
6500 rpm
5 950 rpm
Firing order
1-5-4-2-6-3-7-8
1-12-5-8-3-10-6-7-2-11-4-9
Poly-V-belt
2 462 mm/1 289 mm
2 335 mm
1The quoted data apply only to the standard vehicle. See an authorized Mercedes-Benz Center for the corresponding data of all special bodies and special equipment.2Premium fuel required. Performance may vary with fuel octane rating.

432 Technical dataFuels, coolants, lubricants, etc.
Model
Capacity
Fuels, coolants, lubricants, etc.
Cooling system
SL 500
SL 600
SL 55 AMG
SL 65 AMG
approx. 12.3 US qt (11.6 l)
approx. 13.6 US qt (12.9 l)
approx. 14.5 US qt (13.7 l)
approx. 16.4 US qt (15,5 l)
MB 325.0 Anticorrosion / Antifreeze
Low temperature cooling system
SL 600
SL 65 AMG
approx. 2.2 US qt (2.1 l)
approx. 3.1 US qt (2.9 l)
MB 325.0 Anticorrosion / Antifreeze
Fuel tank
including a reserve of
All models
SL 500
SL 600
SL 55 AMG
SL 65 AMG
21.1 US gal (80.0 l)
2.6 US gal (10.0 l)
2.6 US gal (10.0 l)
3.7 US gal (14.0 l)
3.7 US gal (14.0 l)
Premium unleaded gasoline:
Minimum Posted Octane 91
(Avg. of 96 RON /86 MON)
Air conditioning system
R-134a refrigerant and special PAG lu-
bricant oil (never R-12)
Hydraulic system for retractable hardtop
0.42 US qt (0.4 l)
MB Hydraulic Fluid
Windshield washer and headlamp cleaning system
7.4 US qt (7 l)
MB Windshield Washer Concentrate
1
1Use MB Windshield Washer Concentrate “S” and water for temperatures above freezing or MB Windshield Washer Concentrate “S” and commercially available pre-
mixed windshield washer solvent / antifreeze for temperatures below freezing. Follow suggested mixing ratios (page 437).

434 Technical dataFuels, coolants, lubricants, etc.Premium unleaded gasoline
Fuel requirements
Only use premium unleaded fuel:

The octane number (posted at the
pu mp ) m ust b e 91 m i n. It is an a ve ra ge
of both the Research (R) octane num-
ber and the Motor (M) octane number:
(R+M) / 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.
!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:

have the fuel tank only partially
filled 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 per-
sons and no luggage


do not exceed
2/3 of maximum ac-
celerator pedal position if the vehi-
cle is fully loaded or operating in
mountainous terrain

442 Technical termsMemory function
Used to store three individual seat,
steering wheel and mirror positions for
each SmartKey or SmartKey with
KEYLESS-GO*.
MON
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 operat-
ing the control system.
Overspeed range
Engine speeds within the red marking
on the tachometer dial, see “Tachome-
ter” (
page 132). Avoid this engine
speed range, as it may result in serious
engine damage that is not covered by
the Mercedes-Benz Limited Warranty.
Parktronic (Parking assist)*
System which uses visual and acoustic
signals to assist the driver during park-
ing maneuvers.
Poly-V-belt drive
Drives engine-components (alternator,
AC compressor, etc.) from the engine.Power train
Collective term designating all compo-
nents used to generate and transmit
motive power to the drive axles, includ-
ing


engine


clutch/torque converter


transmission


transfer case


drive shaft


differential


axle shafts/axles
Program mode selector switch
Used to switch the automatic transmis-
sion between standard operation (S)
and comfort operation (C).
SL 55 AMG with steering wheel gear-
shift control and manual shift program:
in addition to S and C (for regular S or
comfort C operation, see above), you
can use MANUAL for manual shift pro-
gram

443 Technical terms
REST
(Residual Engine Heat Utilization)
Feature that uses the engine heat
stored in the coolant to heat the vehi-
cle interior for a short time after the en-
gine has been turned off.
Retractable hardtop
Hardtop roof that can be opened and
closed at the push of a button and
stored in the trunk.
Roll bar
Occupant protection system which
consists of tubular steel sheathed in
plastic. The roll bar is lowered into the
car body during normal driving condi-
tions and raised automatically. It may
also be manually raised and lowered by
operating a button during critical driv-
ing situations.RON
The Research Octane Number for gaso-
line 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.
SBC
(S
ensotronic B
rake C
ontrol)
Electronically controlled hydraulic
braking system for increased braking
safety and comfort.
Shift lock
When the vehicle is parked, this lock
prevents the gear selector lever from
being inadvertently moved out of posi-
tion P without SmartKey turned and
brake pedal depressed. SRS
(S
upplemental R
estraint S
ystem)
Seat belts, emergency tensioning de-
vice and airbags. Though independent
systems, they are closely interfaced to
provide effective occupant protection.
Tele Aid System
(Tele
matic A
larm I
dentification on D
e-
mand)
The Tele Aid system consists of three
types of response: automatic and man-
ual emergency, roadside assistance
and information. Tele Aid is initially ac-
tivated by completing a subscriber
agreement and placing an acquain-
tance call.
The Tele Aid system is operational pro-
vided that the vehicle’s battery is
charged, properly connected, not dam-
aged and cellular and GPS coverage is
available.