Jan 23, 2015 · OAT and HOAT antifreeze is designed for use in aluminum radiators and components. You should NEVER mix OAT based formulas (which includes hoat) with IAT …

Jan 11, 2018 · NO HOAT in ye OATS! Napalm to the fire! I just purchased a used 2016 Grand Cherokee (WK2) from a "Ford" dealer. I noticed that the coolant was below the low line so …

Dec 8, 2010 · Users manual for the 5.7 calls for HOAT (Hybrid Organic Acid Technology) type antifreeze. (labeled as G05 for Zerex/Valvoline brand) Bought my GC used and I've heard that …

Nov 27, 2005 · Stick with the HOAT stuff spec'd for the TJs. As several people have mentioned here there is a specific chemical mixed used for HOAT and Chrysler designed the Jeep engine …

May 24, 2020 · This has probably been asked a million times but when I search for an answer I either find threads talking about the differences between various coolants or a pissing match of …

Sep 27, 2024 · Not compatible. If you mix them they can actually gel thick enough to disable your vehicle. By the way, your parts were designed for the anticipated coolant, which for the KK is 5 …

Sep 29, 2010 · Dex-Cool's actually a different coolant entirely than what Jeeps ship with and Chrysler recommends. Factory fill on your WK is a HOAT-based coolant, Zerex G-05 (Mopar …

Dec 3, 2024 · I can tell you pink Mopar HOAT coolant was OEM on my 4.7 and that is what I still use. I would guess 4.0 is the same. If YOU put green in the reservoir, that was probably a bad …

Mar 3, 2014 · Don't think HOAT isn't all that different from OAT. An extra anticorrosion additive. Nice. So G-05 is an HOAT coolant then. I can't believe the number of cars I've seen lately (late …

Mar 19, 2023 · Daimler-Chrysler HOAT was a good compromise. The hybrid portion allowed it to begin protecting right away, instead of needing mileage to protect. Those who have been …