OAT coolants need to be flushed from your car every five year or 150,000 miles. Certain manufactures will add specific additives to OAT coolant that will stop corrosion and rust. When you have corrosion inhibitors in an organic acid, it will help to make the coolant last longer however, it will make the metal parts wear down over time. OAT is different from IAT as it does not include phosphate corrosion inhibitors or silicates to safeguard your car. IAT coolants are still used in older cars made before the mid-1990s.Īn OAT coolant comes in a couple of different dyed colors ranging from dark green to orange. You should flush out IAT coolants from your car’s system once every couple of years or 30,000 miles. It contains phosphate corrosion inhibitors and silicates that safeguard the metal parts in your cooling system. It is a clear coolant that is dyed green so consumers can identify what it is.
Used from the 1920’s to the late 1990’s, IAT coolant is used most often in United States-manufactured cars. Here are some tips for choosing the right coolant, and some coolant reviews to help you find the right coolant/antifreeze for you.įree of nitrites, silicates, borates, and amines, this antifreeze is the best general-purpose coolant at a reasonable price. When you are purchasing coolant for your car, it important to consider how often you flush out the coolant, what types of additives you like in your formula, and what will help you protect the metal in your cooling system while stopping corrosion. There are actually three different types to choose from, and they are each created in different ways. Buying the right coolant / antifreeze for your car can be trickier than you think.
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