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Open Today! 9:00 AM - 8:00 PM
Open Today! 9:00 AM - 8:00 PM
205 Toyota Lane Henderson, NC 27537 2524382181
205 Toyota Lane, Henderson, NC 27537
Sales: (252) 654-9442 | Service: (252) 654-9516 | Parts: (252) 654-9517

What Type of Coolant to Use for Your Car?

What Type of Coolant to Use for Your Car?


Many car owners have a misunderstanding that maintaining the coolant level is the only thing that is important and that it does not matter what coolant type you add in the radiator. This is a completely wrong approach which can lead to problems like corrosion, formation of deposits and cavitation in engine components. So, how do you choose the right type of coolant for your car? Read on to know.


What Do OAT, IAT and HOAT Mean in Coolants?


Not all coolants are made the same and there are several types of coolants available in the market. Coolants are categorized by the inhibitors package they contain. An inhibitor package refers to a combination of chemical compounds that work to prevent corrosion in the engine components.


  • OAT stands for Organic Acid Technology. It is a long life coolant that does not have nitrite added. Unlike other coolants, OAT coolants have a life of 12,000 engine hours or 600,000 miles. However, the performance of the OAT coolant is reduced if you mix any nitrite based coolant with it.
  • IAT stands for Inorganic Acid Technology. It is a low-silicate based coolant mainly designed for cars and light-duty trucks. IAT coolants need the addition of supplemental coolant additives to protect cooling systems of heavy engines from corrosion, freezing, boiling over, cavitation and liner pitting. In comparison to OAT and HOAT coolants, IAT coolants need the frequent addition of supplemental coolant additives at a maintenance interval of 25,000 miles.
  • HOAT stands for Hybrid Organic Acid Technology. As the name suggests, HOAT coolants have a combination of inhibitor packages of IAT and OAT coolants. HOAT coolants also require the addition of supplemental coolant additives at first maintenance interval of 25,000 miles.


Why Color is Not the Right Factor to Determine the Right Type of Coolant


There is no standardization of color scheme for coolants. Coolant manufacturers add dye in the coolant for a specific reason. Water and antifreeze compounds are colorless. In the case of a coolant leak, it will be visually difficult to detect the coolant leak. Hence, a dye is added to the coolant. IAT coolants are green in color while HOAT coolants are dyed orange or yellow. If you select the coolant by color, there is a risk of mixing two types of coolants that will do more damage to the engine than good.


How to Determine the Right Type of Coolant for Your Car?


The best place to get information about the right coolant for your vehicle is the car dealership. Car manufacturers provide coolants to dealers for the cars they manufacture. If you go to the car dealership, you can get OEM coolants recommended for your car. You can also purchase aftermarket coolants available in the market. Just check the “recommended for” section on the coolant packaging. If it mentions your car model, you can go ahead and use it in your car. Another place to get information about the right coolant for your car is the car owner’s manual.


Car manufacturers provide information about recommended fluid types in the car owner’s manual and you will find information about the right coolant type there as well.


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