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A GOOD HOAT coolant is Zerex G05 its the choice of many Diesel engine owners, do not buy the 50/50 mix, buy the concentrate and mix with distilled water and do not use Tap Water... My self I would pour a 4-5 gallons of distilled water through the engine to flush out any old anti freeze in the block that did not drain out...The manufacturer recommends using MOPAR
Antifreeze/Coolant 5 Year/100,000 Mile Formula
HOAT (Hybrid Organic Additive Technology) or
equivalent.
Page 536 of the owners manual.
No need to buy Mopar stuff, the Zerex is just as good and a lot cheaper like I said many diesel engines use Zerex G05 including my old 06 CTD, if it holds up in a diesel it will hold up in your Hemi and its good for 5/100K just like Mopar stuff..Thanks, I used full strength and mixed with distilled water. I will get the mopar stuff when I can go to the dealer, or order some online.