Hello all, I recently needed to add some coolant to my 2004 TJ. I checked my 2004 Chrysler shop manual and it said that I must use Mopar HOAT antifreeze. It goes on to say that you must not mix any other type of coolant, or risk voiding your warranty
I did a little research on the web and found the following article:
According to the article, the proprietary Mopar HOAT (hybrid organic acid technology coolant) appears to be be made by Valvoline who also makes Zerex, Glysantin G 05 (Available at your local Pep Boys car parts store).
I picked up some Zerex G05, and the container states that it's compatible with newer Diamler Chrysler vehicles. It meets or exceeds the required MS-9769 standard.
Just thought I'd share.