Mercedes Benz 2007 r 320 cdi User Manual

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Technical data
Fuels, coolants, lubricants, etc.
These blends must also meet all other fuel 
requirements, such as resistance to spark 
knock, boiling range, vapor pressure, etc.
Diesel engine
Only use commercially available vehicular 
diesel fuels No. 2 or No. 1 (ASTM D975 No. 
2-D or No. 1-D).
To prevent malfunctions, diesel fuel with 
improved cold flow characteristics is of-
fered in the winter months. Check with 
your fuel retailer.
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 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 corrosion 
protection and increase boil-over protec-
tion. Refer to Maintenance Booklet for 
replacement interval.
Coolant system design and coolant used 
determine the replacement interval. The 
replacement interval published in the 
Maintenance booklet is only applicable if 
MB 325.0 anticorrosion/antifreeze solu-
tion or other Mercedes-Benz approved 
products of equal specification (see 
Factory Approved Service Products pam-
phlet) are used to renew the coolant con-
centration 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.
!
Do not fill the tank with gasoline. Do not 
blend diesel fuel with gasoline or kerosine. The 
fuel system and engine will otherwise be 
damaged, which is not covered by the 
Mercedes-Benz Limited Warranty.