What Colour Coolant Should I Use?
What Colour Coolant Should I Use? TYPE INHIBITOR TECHNOLOGY COLOR IAT (Inorganic Additive Technology) Silicates GREEN OAT (Organic Acid Technology) Organic Acids ORANGE HOAT (Hybrid OAT) Silicates & Organic Acids YELLOW HOAT (Hybrid OAT, Phosphate-free) NAP Free TURQUOISE How do I know which coolant to use? The most common method to find out is to