Mercedes Benz 2003 cl 600 User Manual

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Technical data
Fuels, coolants, lubricants etc.
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 cor-
rosion protection.
If the antifreeze mixture is effective to 
–22°F (–30°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 to provide the necessary corrosion 
protection and increase in the boil-over 
protection. You should have it replaced 
every 15 years or 150000 miles 
(250000 km), whichever comes first. 
Coolant system design and coolant used 
stipulate the replacement interval. The 
above replacement interval is only applica-
ble if MB 325.0 anticorrosion/antifreeze 
solution 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% 
anticorrosion/antifreeze [equivalent to 
freeze protection to approx. –22°F 
(–30°C)]. If you use a solution that is more 
than 55% anticorrosion/antifreeze [freeze 
protection to approx. –49°F (–45°C)], the 
engine temperature will increase due to 
the lower heat transfer capability of the so-
lution. 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 that 
the mixture is in accordance with label in-
structions.
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.