engine coolant SMART FORTWO COUPE 2008 User Guide
Page 297 of 314
Layout of polyVbelt
296
>> Technical data. For dimensions of the polyVbelt, see
"Engine" (
page 297).
All modelsVehicles with air conditioning with climate
control* have two polyVbelts. The additional
polyVbelt is shown in black. The standard
polyVbelt is shown in purple.1
Automatic belt tensioner
2
Generator (alternator)
3
Coolant pump
4
Air conditioning compressor*
5
Crankshaft
Page 305 of 314
Service fluids and capacities
304
>> Technical data.
Components
Model
Capacity
Fuels, coolants, lubricants, etc.
Engine with oil filter
All models
approx. 3.5 US qt (3.3 l)
Approved engine oils
Transmission
All models
2.4 US qt (2.3l)
BOT328
Brake system
All models
1.05 US qt (1.0 l)
Brake fluid (DOT 4+)
Cooling system
All models
approx. 4.5 US qt (4.3 l)
Anticorrosion/Antifreeze meeting specification MB 325.0
Fuel tank
All models
8.72 US gal (33.0 l)
Premium unleaded gasoline:
including a reserve of
All models
1.32 US gal (5.0 l)
Minimum Posted Octane 91 (Afvg. of 96 RON/86 MON)
Air conditioning system*
All models
R134a refrigerant and special PAG lubricant oil (never R12)
Windshield washer system
All models
4.0 US qt (3.8 l)
Windshield washer concentrate
1
1 Use a windshield washer concentrate labeled for summer and water for temperatures above freezing point or a windshield washer concentrate labeled for winter and water for
temperatures below freezing point. Follow suggested mixing ratios (
page 308).
Page 310 of 314
Service fluids and capacities
>> Technical data.
309 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 35°F (37°C) and corrosion
protection.!
Add premixed coolant solution only.
Adding water and MB 325.0 Anticorrosion/An
tifreeze separately from each other, could
cause engine damage not covered by the
smart Limited Warranty.
If the antifreeze mixture is effective to 35°F
(37°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,
even in countries which have high tempera
tures to provide the necessary corrosion
protection and increase boiling protection.
Refer to Maintenance/ Service Booklet for re
placement interval.
Coolant system design and coolant used
determine the replacement interval. The
replacement interval published in the Mainte
nance booklet is only applicable if MB 325.0
Anticorrosion/Antifreeze solution or other
smart approved products of equal specifica
tion are used to renew the coolant concentra
tion or bring it back up to the proper level.
For information on other smart approved
products of equal specification, contact an
authorized smart center.
To provide important corrosion protection,
the solution must be at least 50% anticorro
sion/antifreeze (equivalent to freeze protec
tion 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 instructions.
Always use anticorrosion/antifreeze that have
been approved by smart. For information
contact an authorized smart center.
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, consult an
authorized smart center.
Page 311 of 314
Service fluids and capacities
310
>> Technical data. Anticorrosion/antifreeze
Your vehicle contains a number of aluminum
parts. The use of aluminum components in
motor vehicle engines necessitates that
anticorrosion/antifreeze coolant used in such
engines be specifically formulated to protect
the aluminum parts.Failure to use such anticorrosion/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 concentra
tion checked. The coolant is also regularly
checked each time you bring your vehicle to
an authorized smart center for service.
Anticorrosion/antifreeze quantity:
Approximate freeze protection35°F (37°C)
49°F (45°C)
All models
2.27 US qt (2.15 l)
2.45 US qt (2.32 l)