However, don’t ever mix HOAT coolant with IAT or OAT solutions. You might need to add something every 25,000 miles to ensure maximum effectiveness. These additives will typically include silicates, phosphates, nitrates, or molybdates. Sometimes, manufacturers recommend mixing special additives in the system when HOAT is being used. Still, it offers better protection against corrosion, making it the overall better option. While this is much longer than IAT coolant, it’s not as effective as OAT. It can be used for up to five years or 100,000 miles without degrading. Plus, it has a significantly longer service life than most other coolant types. This characteristic works well whether it is operating in low or high temperatures. It’s needed to perform well in a variety of engine temperatures.īecause of the special hybrid engineering, HOAT coolant also helps to keep rust from occurring, and it’s also protective against corrosion. This solution flows through the channels of the engine to dissipate the heat that’s produced by the motor. The main purpose of HOAT coolant is to cool off the car motor, which is the same as any coolant type. As with other liquids, it keeps corrosion to a minimum too. Not only will the right antifreeze keep the cooling system fluids from freezing in cold temperatures, but it also absorbs the heat from the motor to prevent overheating. Mixing these alcohol solutions with water to the appropriate balance helps to raise the freezing and boiling points of the engine. The freezing point of this alcohol is 8 degrees Fahrenheit, while the boiling point is around 400 degrees. It is colorless but has a sweet smell and taste. The mono ethylene glycol is another alcohol that is used in coolants. This alcohol type features a 370-degree Fahrenheit boiling point and has a freezing point of about -74 degrees. It has been deemed the safer of the two and is considered non-toxic. It’s the main ingredient in many popular coolants and is also used with other industrial products. The mono propylene glycol solution is a synthetic option that has no color, is odorless, and doesn’t taste like anything. What Does Coolant Do?Ĭoolant contains several alcohols that are either mono ethylene glycol or mono propylene glycol. You will find HOAT coolant in many vehicles like Volkswagen, Ford, Volvo, Mercedes Benz, Audi, KIA, Hyundai, Nissan, Honda, Toyota, and many more. HOAT antifreeze will often be labeled with terms like G-05, G-11, G-12 and Global, and you need to check your owner’s manual to see which type your car requires. This is a much longer service life than some other types of coolant. This type of coolant should be flushed every 100,000 miles or every five years, whichever one comes first. It’s meant for newer cars, with some of the top manufacturers recommending it. HOAT Coolant contains added silicates for additional protection against rusting or corrosion of the aluminum parts. While it is normally yellow in color, you can also find it in purple, blue, pink or turquoise. This coolant type is a combination of OAT (Organic Acid Technology) and IAT (Inorganic Acid Technology). HOAT means Hybrid Organic Acid Technology, or Hybrid OAT. Does it matter what brand of coolant I use? What is HOAT Coolant?
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