Reposting my post here: https://www.crossfireforum.org/forum...ad.php?t=25258
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The correct antifreeze/coolant for all Crossfires is a HOAT (Hybrid Organic Acid Technology) coolant.

There are only a few commonly available coolants that are compatible with the factory fill coolant, in the United States, anyway. I think that there are more options, including a BASF formulation, in other markets.

1) MB part number Q 1 03 0002. 1 Gallon container. Owner's manual calls for this,or Zerex G-05.
2) Mopar Part No. 05066386AA. 1 Gallon of MS-9769 five year coolant. Part number from the service manual and Mopar chemicals guide.
3) Valvoline Zerex G-05 HOAT. Does not explicity meet MB 325.0, but Service manual says it is OK. Sold as both full strength and pre-cut 50/50 with distilled water.

Zerex is the best price of the three, typically $14.50 to $17.00 at Pep Boys or NAPA. My local Benz dealer gets $22 a gallon for its magic cooling juice, and my local Chrysler MOPAR dealer wanted $28 a gallon for their proprietary mix.

Unless the system is very, very, very, very, very well flushed of all old coolant, do not mix coolant technologies, stick with one of the above three part numbers (plus distilled water to fill the balance of the system) and you should be fine.

Click the image to go to my gallery page for the picture, which will then link to a (MUCH!) bigger version, sharp enough so you can read the mixing table on the back of the bottle.



NOTE: Factory fill is blue, Benz stuff is yellow or blue. Both are compatible.