![]() ![]() ![]() Motorcraft ( Ford) coolant is also HOAT, but I’ve always used the Zerex G05 and distilled water. Take Zerex Original Green for example It is low silicate (<250 ppm) and long life (5 years/100,000 miles). Interesting enough, even Original Green can be low silicate and long life these days. ![]() If you’re adding coolant or replacing it without flushing the system, it is important ( mixing dissimilar additives could lead to undesirable consequences – sedimentation, jelling, etc.) Is it important to replace coolant without flushing? HOAT = Hybrid OAT, ie it is OAT with some silicates in it, not a big deal if considering PEAK or Prestone all vehicle extended life coolants coolants (these are OAT). HOAT applications typically contain silicate. HOAT (Figure 2) - HOAT technology contains organic acids and several inorganic additives. OAT is an extended life coolant with a life expectancy of 5 years/150,000 miles. What is the difference between Hoat and OAT antifreeze? Its Hybrid Organic Acid Technology (HOAT) chemistry combines the best of conventional and organic acid-based chemistry to provide the ultimate protection against rust and corrosion. ZEREX G-05 is the automaker approved original chemistry used in newer Ford, Chrysler and Mercedes-Benz automotive and diesel engines. By mixing these you may lose some of the valuable benefits of HOAT. The colors for this type of coolant are orange, bright red, red, blue, and even dark green.Ĭan Oat and Hoat coolant be mixed? No, HOAT coolants are not compatible with OAT or NOAT coolants and should not be mixed, even if HOAT is a hybrid mix of OAT and IAT coolant. What color is Jeep coolant? 2013-2020 Jeeps require the use of OAT coolant. If you are still questioning it i would do a full system flush. (But it still isn’t the bright orange color of the HOAT stuff). The OAT stuff is purple when new, and turns to almost an orangish-red color when used. Mixing engine coolant (antifreeze) types is not recommended and can result in cooling system damage. In conclusion, there are a variety of colors available, including oranges, reds, greens, yellows, blues, clear and pink dye colors.Ĭan you mix Mopar antifreeze with other antifreeze? Mixing IAT with OAT, HOAT or NOAT antifreezes will not damage your vehicle’s cooling system however the mixture will negate the long life/extended life attributes of these formulations. What happens when you mix OAT and Hoat coolant? HOAT coolants formulations are not compatible with OAT coolants because they do contain nitrites. Like the IAT, it also contains silicate for aluminum protection. HOAT (Hybrid Organic Acid Technology) Mixture of OAT and IAT antifreeze. The Hybrid Organic Acid Technology (HOAT), protects the internals of the engine from rust and corrosion while the fluid courses through.ĭex-Cool® is trademarked by GM. The automotive industry is always evolving and learning from previous generations and the Mopar HOAT Antifreeze is a product of that ingenuity. Automakers have been known to throw stuff in the mix to help prolong the life of rubber hoses or lubricate the water pump. Zerex gets a yellow dye while the Mopar version gets a pinkish dye. While most Organic Acid Technology (OAT) coolants are ordinarily orange, yellow, red or purple, Hybrid Organic Acid Technology (HOAT) coolants are orange and yellow.ġ) Valvoline makes the HOAT for Chrysler. What color coolant does Chrysler use? It’s marvelous to understand that color doesn’t matter. Mix a minimum solution of 50% OAT engine coolant that meets the requirements of FCA Material Standard MS. We recommend using Mopar Antifreeze/Coolant 10 Year/150,000 Mile Formula OAT (Organic Additive Technology) that meets the requirements of FCA Material Standard MS. Suitable for both gasoline and diesel engines, its original long-life chemistry is specially formulated with the highest quality virgin ethylene glycol and Hybrid Organic Acid Technology (HOAT). Zerex G05 Antifreeze/Coolant is proven to maximize engine life in newer Ford, Chrysler and Mercedes-Benz cars, light trucks and heavy-duty vehicles. In almost all cases, the OAT coolant is orange. HOAT is normally yellow in color, but you can also find it in purple, blue, pink or turquoise. The most obvious difference between the two is the color. What is the difference between Hoat coolant and OAT coolant? These HOAT antifreezes are usually dyed a yellow color by the manufacturer and, simply put, is a mixture of an OAT and an IAT antifreeze coolant. Think of a HOAT antifreeze as the best of both worlds when it comes to coolants. The water pump keeps fluid circulating through the critical parts of your engine. Prestone ® Antifreeze+Coolant prevents this corrosion and buildup, which keeps fluid flowing appropriately and heat transfer optimal throughout the system. ![]()
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