Mercedes Benz 2003 slk 230 kompressor User Manual

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Technical data
Fuels, coolants, lubricants etc.
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 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).
The coolant solution must be used 
year-round to provide the necessary corro-
sion protection and increase boil over-pro-
tection. You should have it replaced every 
15 years or 150000 miles (250000 km), 
whichever comes first. Coolant system de-
sign and coolant used stipulate the re-
placement interval. The above 
replacement interval is only applicable if 
MB 325.0 anticorrosion/antifreeze solu-
tion or other Mercedes-Benz approved 
products of equal specification (see Facto-
ry Approved Service Products pamphlet) 
are used to renew the coolant concentra-
tion or bring it back up to the proper level.
To provide important corrosion protection, 
the solution must be at least 45% anticor-
rosion/antifreeze (equivalent to freeze 
protection to approx. -22°F [-30°C]). If you 
use a solution that is more than 55% anti-
corrosion/antifreeze (freeze protection to 
approx. -49°F [-45°C]), the engine temper-
ature will increase due to the lower heat 
transfer capability of the solution. There-
fore, do not use more than this amount of 
anticorrosion/antifreeze.
If the coolant level is low, water and MB 
Anticorrosion/Antifreeze should be used 
to bring it up to the proper level (have cool-
ing system checked for signs of leakage). 
Please make sure that the mixture is in ac-
cordance with label instructions.
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 your authorized Mercedes-Benz 
Center.