Originally Posted by Rednroll

I can't believe I had to use Google to figure out what type of Anti-freeze I needed to put in my JK. I read the manual "The manufacturer recommends using MOPAR Antifreeze/Coolant 5 Year/100,000 Mile Formula HOAT (Hybrid Organic Additive Technology)." Ok, off to the auto-parts store......Browse the shelf....GM Dexcool, Toyota, Hundai, Ford compatible, Prestone......where the heck is the Chrysler compatible? Where is this Mopar/Hoat stuff??? Continue to stare at the shelf scratching my head. Leave store frustrated...no one around to assist. Get home....Go to Google...find this thread. I just wanted to top my coolant off. If I got to order the stuff, I might as well do a complete flush since I'm due anyways. I never imagined topping off my engine coolant was going to be so damn difficult.

Originally Posted by TheTerminator

It seems to me that antifreeze is antifreeze. All the antifreeze sold in my local auto store say they are compatible with all makes and models. I topped off my Jeep with the yellow colored Prestone and so far so good. It's been at least 30K miles. It still looks, feels, and smells like antifreeze.

Originally Posted by TheTerminator

It seems to me that antifreeze is antifreeze. All the antifreeze sold in my local auto store say they are compatible with all makes and models. I topped off my Jeep with the yellow colored Prestone and so far so good. It's been at least 30K miles. It still looks, feels, and smells like antifreeze.

Originally Posted by Owner's Manual

CAUTION:
Mixing of engine coolant (antifreeze) other than
the specified HOAT engine coolant (antifreeze)
may result in engine damage and may decrease
corrosion protection. If a non-HOAT engine coolant
(antifreeze) is introduced into the cooling
system in an emergency, it should be replaced with
the specified engine coolant (antifreeze) as soon as
possible.
• Do not use water alone or alcohol-based engine
coolant (antifreeze) products. Do not use additional
rust inhibitors or antirust products, as they
may not be compatible with the antifreeze/engine
coolant (antifreeze) and may plug the radiator.

CAUTION:
This vehicle has not been designed for use with
Propylene Glycol based engine coolant (antifreeze).
Use of Propylene Glycol base engine coolant
(antifreeze) is not recommended.

Adding Engine Coolant
Your vehicle has been built with an improved engine
coolant (antifreeze) that allows extended maintenance
intervals. This engine coolant (antifreeze) can be used up
to 5 Years or 102,000 miles (170 000 km) before replacement.
To prevent reducing this extended maintenance
period, it is important that you use the same engine
coolant (antifreeze) throughout the life of your vehicle.
Please review these recommendations for using Hybrid
Organic Additive Technology (HOAT) engine coolant
(antifreeze).

NOTE: Mixing engine coolant (antifreeze) types will
decrease the life of the engine coolant (antifreeze) and
will require more frequent engine coolant (antifreeze)
changes.

Originally Posted by rob_engineer

Maybe you got lucky. Why take the risk? Maybe save $10 and risk damaging your cooling system & engine? The disastrous results of mixing two different types in our jeeps has been well documented.
I forget the specifics, but all JK's don't take the same stuff. There was a change between model years. Maybe someone who knows those details can respond.

Originally Posted by DJ1

Also I read if you have a 2013 model that was made in 2012 prior to the December plant shutdown then your 2013 was filled with HOAT...