How Many Different Types Of Coolant Are There?
How Many Different Types Of Coolant Are There? There are three main types of coolant that car companies use: Inorganic Additive Technology (IAT), Organic Acid Technology (OAT), and Hybrid Organic Acid Technology (HOAT). Typically, older cars use IAT. What type of coolant do I need? For most vehicles, a glycol based antifreeze coolant is the