Coolant is typically a mix of distilled water and antifreeze. Engine coolant is a mix of ethylene glycol and water. ECD is the process by which the motion of coolant and water through your engine creates an electrical charge similar to a galvanic battery. It is basically a universal coolant/antifreeze for all model vehicles including off-road vehicles. HOAT coolants are orange and yellow for the most part. Color is not a reliable indicator in choosing between OAT, IAT and HOAT, so you better choose wisely … and what is HOAT coolant anyway? Due to the orange color of DEX-COOL, it is harder to visually tell when the coolant must be replaced. Our 10 best antifreeze options have been tested by offroaders and THEY LOVE IT! Anti-freeze has the same purpose as coolant, but it is even more resistant to the cold. Dexcool is an OAT coolant which is not compatible with some of the older antifreezes that are or … Prestone HOAT or hybrid-OAT antifreeze is a low silicate-based automobile coolant infused with neutralized organic acids that protect engine parts from corrosion. The Story on HOAT. This is your orange and yellow colered dexcool compatible Prestone as well as Zerex and Peak and a number of other store brands. Hybrid Organic Acid Technology (HOAT) is a combination of OAT and IAT. The red HOAT coolant has been used in all Mopars since 1999 IIRC and Chrysler changed its coolant in the vehicles to OAT in 2013. These types are mainly EG based mixed with low amount of silicate to protect engine parts and the radiator from corrosion as well as the aluminum parts. Don’t let the names trick you up. This extended-life coolant with its patented formula works with light-duty trucks as well as with all car models and makes. I have seen many cooling systems destroyed by it. Hello, everybody. I went to one auto parts store yest and the manager behind the counter said under no circumstances should you mix the too. Heavy-duty HOAT Antifreeze/Coolants Color: Yellow, Blue, Red, other colors could be used. With respect to regular coolant, the green color is utilized to interact with rust and corrosion, letting you know visually when the coolant inside your vehicle needs to be replaced. If you are absolutely paranoid then flush the system entierly with running water and add whichever coolant you want because you won't be mixing them at that point. HOAT coolant vs All make coolant. Coolants that manufacturers sell can confuse matters even more, like Honda’s blue coolant. Antifreeze is coolant. These higher performance levels should be sought in places with extreme weather conditions. Zerex announced the first aftermarket coolant in the U.S. developed to meet the specific needs of consumers with Asian nameplate vehicles, including Toyota, Nissan, Hyundai, Honda and others. It sometimes comes in orange or in yellow liquid form. It … Your truck comes with factory Mopar coolant which is a HOAT coolant, I don't know where you found that last quoted section but it's wrong, or at least it's missing some important information.