coolant MERCEDES-BENZ S-Class 2008 W221 Comand Manual

745 Technical data
Parts service
Warranty coverage
Identification labels
Layout of poly-V-belt drive
Engine
Rims and tires
Electrical system
Main dimensions and weights
Fuels, coolants, lubricants, etc.

750 Technical dataLayout of poly-V-belt driveS 450 4MATIC
1, S 550 and
S 550 4MATIC
1Idler pulley
2Idler pulley
3Automatic belt tensioner
4Pump for power-steering assistance
Vehicles with ABC*: ABC* tandem
pump (pump for power-steering assis-
tance and ABC* chassis)
5Air conditioning compressor
6Crankshaft
7Coolant pump
8Generator (alternator)
S63 AMG
1Idler pulley
2Idler pulley
3Idler pulley
4Automatic belt tensioner
5Pump for power-steering assistance
6Air conditioning compressor
7Crankshaft
8Coolant pump
9Generator (alternator)
S 600 and S 65 AMG
1Automatic belt tensioner
2ABC tandem pump (pump for
power-steering assistance and ABC
chassis)
3Air conditioning compressor
4Crankshaft
5Coolant pump
6Generator (alternator)
7Idler pulley
8Idler pulley
9Idler pulley
1Canada only

764 Technical dataFuels, coolants, lubricants, etc.Capacities
Vehicle components and their respective
lubricants must match. Therefore use only
products tested and approved by
Mercedes-Benz.
Please refer to the Factory Approved
Service Products pamphlet (USA only), or
inquire at an authorized Mercedes-Benz
Center.
Warning!
G
Comply with all valid regulations with re-
spect to handling, storing and disposing of
service fluids. Otherwise you could endan-
ger persons or the environment.
Keep service fluids out of the reach of chil-
dren.
For health reasons, you should prevent ser-
vice fluids from coming into direct contact
with your skin or clothing.
If a service fluid is swallowed, contact a phy-
sician immediately.

765 Technical data
Fuels, coolants, lubricants, etc.
Model
Capacity
Fuels, coolants, lubricants, etc.
Engine with oil filter
S 450 4MATIC
1
S 550
S 550 4MATIC
1Canada only
8.98 US qt. (8.5 l)
Approved engine oils
S600
9.51 US qt. (9.0 l)
S63 AMG
9.25 US qt. (8.75 l)
S65 AMG
9.51 US qt. (9.0 l)
Automatic transmission
S 450 4MATIC
1
10.14 US qt. (9.6 l)
MB Automatic Transmission Fluid
S 550
10.36 US qt. (9.8 l)
S 550 4MATIC
10.14 US qt. (9.6 l)
S600
8.14 US qt. (7.7 l)
S63 AMG
9.25 US qt. (8.75 l)
S65 AMG
9.2 US qt. (8.7 l)
Rear axle
S 450 4MATIC
2
2Canada only
1.90 US qt. (1.8 l)
Hypoid gear oil SAE 85 W 90
S 550
1.27 US qt. (1.2 l)
S 550 4MATIC
1.90 US qt. (1.8 l)
S600
2.11 US qt. (2.0 l)

766 Technical dataFuels, coolants, lubricants, etc.
Model
Capacity
Fuels, coolants, lubricants, etc.
Rear axle
S63 AMG
1.27 US qt. (1.2 l)
Fuchs Titan EG 5010 D
S65 AMG
1.69 US qt. (1.6 l)
Hydraulic system ABC*
All models ex-
cept vehicles
with 4MATIC
4.2 US qt. (4.0 l)
MB ABC Fluid
Power steering
S 450 4MATIC
1
S 550
S 550 4MATIC
approx. 1.06 US qt. (1.0 l)
MB Power Steering Fluid
(Chevron Texaco PSF 9109)
1
1For detailed information, please refer to the Factory Approved Service Products pamphlet (USA only) or contact an authorized Mercedes-Benz Center.
S600
approx. 1.27 US qt. (1.2 l)
S63 AMG
approx. 1.06 US qt. (1.0 l)
S65 AMG
approx. 1.27 US qt. (1.2 l)
Front wheel hubs
All models ex-
cept vehicles
with 4MATIC
2
2Vehicles with 4MATIC: All wheel hubs have a lifelong greasing and therefore do not need to be greased.
approx. 3.6 oz. (95 g) each
High-temperature roller bearing grease
Brake system
All models
approx. 0.63 US qt. (0.6 l)
MB Brake Fluid (DOT 4+)

767 Technical data
Fuels, coolants, lubricants, etc.
Model
Capacity
Fuels, coolants, lubricants, etc.
Cooling
system
Vehicles without rear passen-
ger compartment climate
control*
S 450 4MATIC
1
S 550
S 550 4MATIC
1Canada only
12.15 US qt. (11.5 l)
MB 325.0 Anticorrosion/Antifreeze
Vehicles with rear passenger
compartment climate control*
S 450 4MATIC
1
S 550
S 550 4MATIC
13.84 US qt. (13.1 l)
S 600
14.69 US qt. (13.9 l)
S63 AMG
11.83 US qt. (11.2 l)
S65 AMG
14.69 US qt. (13.9 l)
Low temperature cooling system
S 600
2.75 US qt. (2.6 l)
MB 325.0 Anticorrosion/Antifreeze
S65 AMG
3.28 US qt. (3.1 l)
Fuel tank
All models
23.78 US gal (90.0 l)
Premium unleaded gasoline:
Minimum Posted Octane 91
(Avg.of96RON/86MON)
including a reserve of
S 450 4MATIC
1
S 550
S 550 4MATIC
S 600
2.9 US gal (11.0 l)
S63 AMG
3.7 US gal (14.0 l)
S65 AMG
3.7 US gal (14.0 l)

768 Technical dataFuels, coolants, lubricants, etc.
Model
Capacity
Fuels, coolants, lubricants, etc.
Air conditioning system
All models
R-134a refrigerant and special PAG
lubricant oil (never R-12)
Windshield washer
All models
approx. 6.87 US qt (6.5 l)
MB Windshield Washer Concentrate
1
1Use MB Windshield Washer Concentrate “MB SummerFit” and water for temperatures above freezing or MB Windshield Washer Concentrate “MB SummerFit” and
commercially available premixed windshield washer solvent/antifreeze for temperatures below freezing point. Follow suggested mixing ratios (page 774).

769 Technical data
Fuels, coolants, lubricants, etc.
Engine oils
Engine oils are specifically tested for their
suitability in our engines and durability for
our service intervals. Therefore, only use
approved engine oils and oil filters
required for vehicles with Maintenance
System. For a listing of approved engine
oils and oil filters, refer to the Factory
Approved Service Products pamphlet
(USA only), or contact an authorized
Mercedes-Benz Center.
Engine oil additivesAir conditioning refrigerant
R-134a (HFC) refrigerant and special PAG
lubricating oil are used in the air condition-
ing system.
Brake fluid
Only brake fluid approved by
Mercedes-Benz is recommended. Any au-
thorized Mercedes-Benz Center will pro-
vide you with additional information.
!
Using engine oils and oil filters of
specification other than those expressly
required for the Maintenance System, or chang-
ing of oil and oil filter at change intervals longer
than those called for by the Maintenance System
will result in engine or emission control system
damage not covered by the Mercedes-Benz Lim-
ited Warranty.
Please follow Maintenance System recommen-
dations for scheduled oil changes. Failure to do
so will result in engine or emission control sys-
tem damage not covered by the Mercedes-Benz
Limited Warranty.
!
Do not blend oil additives with engine oil.
They may damage the engine. Damage or mal-
functions resulting from blending oil additives
are not covered by the Mercedes-Benz Limited
Warranty.
!
Never use R-12 (CFC) or mineral-based lu-
bricating oil. Otherwise damage to the system
will occur.
Warning!
G
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 condi-
tions, this moisture content can lead to the
formation of bubbles in the system, thus re-
ducing the system’s efficiency.
Therefore, the brake fluid must be replaced
regularly. Refer to your vehicle’s Mainte-
nance Booklet for replacement interval.

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

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.
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 co-solvents.
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.
Warning!
G
Gasoline is highly flammable and poisonous.
It burns violently and can cause serious per-
sonal injury.
Never allow sparks, flame or smoking mate-
rials near gasoline!
Turn off the engine before refueling.
Whenever you are around gasoline, avoid in-
haling fumes and skin or clothing contact,
extinguish all smoking materials.
Direct skin contact with fuels and the inha-
lation of fuel vapors are damaging to your
health.
!
To maintain the engine’s durability and per-
formance, premium unleaded gasoline must be
used. If premium unleaded gasoline is not avail-
able and low octane fuel is used, follow these
precautions:


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 3 000 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.

771 Technical data
Fuels, coolants, lubricants, etc.
Gasoline additives
A major concern among engine manufac-
turers is carbon build-up caused by gaso-
line. Mercedes-Benz recommends only the
use of quality gasoline containing additives
that prevent the build-up of carbon depos-
its.
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 en-
gine performance problems such as:

Warm-up hesitation


Unstable idle


Knocking/pinging


Misfire


Power lossIn areas where carbon deposits may be en-
countered due to lack of availability of gas-
olines which contains these additives,
Mercedes-Benz recommends the use of
additives approved by us for use on
Mercedes-Benz vehicles. Refer to the Fac-
tory Approved Service Products pamphlet
(USA only) or contact an authorized
Mercedes-Benz Center for a listing of ap-
proved 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 the 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 -22°F (-30°C) and corro-
sion protection.
If the antifreeze mixture is effective to
-22°F (-30°C), the boiling point of the cool-
ant in the pressurized cooling system is
reached at approximately 266°F (130°C).
!
Damage or malfunction resulting from poor
fuel quality or from blending additional fuel addi-
tives other than those tested and approved by us
for use on Mercedes-Benz vehicles are not cov-
ered by the Mercedes-Benz Limited Warranty.
!
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 Lim-
ited Warranty.