
Inside the orange coolant are carboxylates, which work to reduce corrosion. Instead, it is used on newer models that are made from nylon and aluminum. Orange antifreeze also helps to protect against corrosion and wear, but it’s not meant for vehicles made with a lot of metal. Ethylene or propylene glycol is used to keep engine temperatures at bay. Silicones are used as the metal sealant, keeping the materials from damage caused by wear, chemicals and moisture. The phosphates come from phosphoric acid and are used to remove grease and oil, along with softening water.


IAT contains several compounds, such as silicone and phosphate mixed with ethylene glycol and propylene glycol. Within the composition, Inorganic Additive Technology (IAT) is added to the mixture. The green composition protects the metallic parts from corrosion and rust. Green coolant is used in systems designed with copper and steel. This engine coolant was made specifically for older vehicles, dating before 2000. Here are some more details of the differences between these coolants: 1. Orange is better suited for newer cars with an aluminum block, while green is better for older cars. Green coolant uses inorganic additive technology while orange uses organic acid technology. The main difference between green and orange antifreeze is the ingredients. Differences Between Green & Orange Coolant Two of the most known coolant colors are green and orange.

Manufacturers add a particular dye to the composition to ensure you know which one to use. The color of the coolant is from the dyes used to make it. Both of these conditions leave your engine vulnerable to damage. In fact, water can evaporate when the engine becomes too hot, and it can freeze in colder climates. While water will cool the engine by itself, it isn’t as effective. To make most coolants, you mix the antifreeze mixture with equal parts water. Coolant keeps the engine at a safe operating temperature while also ensuring that it doesn’t freeze. How Often Should Coolant Be Flushed? What is Coolant?Ĭoolant is antifreeze that has been mixed with water to protect the vehicle.
