It’s likely that manufacturers of coolant could have simply replaced green with green. A mix of IAT and OAT, the orange cocktail – and only the orange - contains 10 percent recycled coolant. This is also used today, and is usually orange or yellow. Colors are mostly red and orange, but also green, pink and blue. OAT: Organic Acid Technology is used today because it offers silicate-free protection of all metals, and for a longer period of time: it’s the long life (LLC) or extended life (ELC) coolant and has a service life of five years or 150,000 miles.The lifespan of traditional coolant is about two years. IAT: Inorganic Acid Technology is the traditional green stuff that is pretty much only used on older cars that predate the late nineties.Follow the manufacturer’s recommendations for the type of fluid used and the service interval. The corrosion inhibitors in engine coolant will break down over time, which is why you should change it periodically. A 50/50 mixture is normally recommended and often sold premixed.Ĥ. That’s what water is for, and why diluting antifreeze/coolant with water is so important. The glycol fluid by itself doesn’t, however, carry heat away effectively. EG and PG raise the boiling point of coolant, and lower the freezing point. Both are still toxic when drained, and should be disposed of properly.ģ. Propylene glycol (PG), which is less hazardous, is also used. Most antifreeze/coolants contain ethylene glycol (EG) – a slightly sweet smelling chemical that is poisonous to animals and humans. That’s how one fluid can protect Bostonians in February and Angelenos in August.Ģ. A proper mixture is important because it prevents corrosion of the cooling system components, raises the boiling point and lowers the freezing point. Engine coolant is a mixture of antifreeze/coolant, de-ionized water, corrosion inhibitors, and dyes. That’s more than a little confusing, so we wanted to break it down for car owners and add some insight on coolant safety as well.”ġ. Today, all these colors help define the three basic types of corrosion inhibitor packages. “It’s like orange has become the new green…as well as blue, yellow and pink. “What started out as plain old neon green fluid for all cars, has evolved from that key identifier, to today’s bright variety of colors. “If there’s anything you should remember about coolant, it’s this: don’t trust the color,” said Brian Hafer, VP of Marketing for. If there’s anything you should remember about coolant, it’s this: don’t trust the color Post this
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