With all respect, I beg to differ.
I've been lurking on some of the other Jeep forums looking for some info, and this has been a big deal with some folks.
This was a post with some good info: I don't know if a cross-post to another forum is allowed, so in case a MOD deletes this, the salient info is below as well:
2013's Now Use OAT Coolant. 2012's Used HOAT Coolant. DO NOT Mix! - Jeep Wrangler Forum
First, a pic of what can happen when mixing HOAT and OAT:
Then a list of differences:
And then the MOPAR TSB:
TSB - 07-004-12 REV. A
Attention! Release Of New Engine Coolant Organic Additive Technology (OAT)
2013 (D2) Ram Truck (3500 Pick Up)
2013 (DD) Ram Truck (3500 Chassis Cab)
2013 (DJ) Ram Truck (2500 Pick Up)
2013 (DP) Ram Truck (4500 / 5500 Chassis Cab)
2013 (DX) Ram Truck (Mexico)
2013 (DS) Ram Truck (1500)
2013 (FF) Fiat 500
2013 (JC) Journey
2013 (JK) Wrangler
2013 (LC) Challenger
2013 (LD) Charger
2013 (LX) 300
2013 (MK) Compass/Patriot
2013 (PF) Dart
2013 (RT) Town & Country/Grand Caravan
2013 (WD) Durango
2013 (WK) Grand Cherokee
2013 (ZD) Viper
NOTE: This bulletins applies to all vehicle listed above for every engine application
EXCEPT the 2013 MK equipped with the 2.2L Diesel engine (sales code ENE)
and the JC vehicle equipped with the 2.0L Diesel engine (sales code EBT).
07-004-12 REV. A
November 03, 2012
Chrysler Corporation LLC. has released a new engine coolant for the 2013 model year vehicles and beyond, for all engine applications except the ones listed in the note above.
This new coolant is an Organic Additive Technology (OAT) (Fig. 1). OAT coolants have a service interval of 10 years or 150,000 miles. For heavy duty truck and extreme duty cycle applications refer to the Service Information or Owner's Manual for proper maintenance
CAUTION: Vehicle Damage may occur if dissimilar coolants are mixed!
Coolants of different technologies are not compatible nor interchangeable (OAT, HOAT or
Mixing these coolants could result in:
• accelerated corrosion within the engine and cooling systems.
• the coolant having an ammonia smell.
• debris (particles) floating in the coolant.
Further inspection by the technician may find corrosion in the system. This could show up as aluminum pipes turning black in the coolant system, engine overheat, or leaks in the coolant system.
NOTE: If OAT (MOPAR P/N 68163848AA Purple) has been Mixed with HOAT (MOPAR P/N 68048953AB Pink Or Factory Fill HOAT Orange (Fig. 2) or (Fig. 3)) or any other coolants have been mixed, it will be necessary to flush the cooling system.
The last para is what was indicated in the owners manual.
I'm inclined to follow Mopar advice on this one; is spite of it being proprietary...