Looking at installing a Mishimoto MMRAD-WRA-07 in my 2013 JKUR unmodified 3.6 Pentastar simply because it appears to be more reliable (OEM has broken core).

My question is what coolant/antifreeze should I use in this all aluminum radiator now that all I have is the power train warranty? I am fairly certain that my JKUR came with OAT from the factory, though I am not sure what the real benefits are?

Thanks in advance.

 

I'm running OAT in my '13 and my owners manual says to do so as well. The OAT is a purple colored antifreeze. I have no idea if others have strayed away from OAT and been successful doing so. Hopefully someone who has can chime in.

 

Thanks, I guess that it will not hurt anything sticking with OAT.

 

In researching this whole OAT thing, I learned that post-2011 (I believe) Zerex DEX-COOL OAT is the same as MOPAR OAT with a different dye color, and it says "5years/150,000 miles" instead of the 10 years/150,000 miles on the MOPAR OAT. I read it on the JeepForum.com

Leaning towards the Zerex DEX-COOL OAT as it is much cheaper and easier to access at most vendors (Walmart, Auto Parts Stores) than MOPAR OAT, which seems to only be available at the stealership. I guess it will not really matter what I put in since I am replacing the radiator and flushing-out the convoluted slurry that is in there now.

 

http://articles.sae.org/11284/