During that time, they found out that amine reacted with nitrite. Coolant manufacturers used to add amine to their coolants until the 70s. Let’s talk about some of the most common coolant additives and what impact they have on the cooling system: 1. Well, except for amine, which we’ll discuss soon. Some may be bad for your engine, but they’re not bad overall. So the answer is: no coolant additive is inherently bad. The “does NOT contain nitrite” label will inform you that it’s not the right coolant for your vehicle. For example, let’s say you’re looking for coolant that contains nitrite. That label exists only to inform people that the particular blend of additives may not be right for some engines. It can mislead people to believe that the additives listed after “does NOT contain ” are always bad. It’s common to see a “does NOT contain ” label on a coolant bottle. The right blend will protect your cooling system from corrosion and other issues. It’s important to use coolant with the right blend of additives. But each type of coolant contains a unique blend of additives. Most (if not all) coolants are ethylene glycol-based. The Most Common Additives Used In Organic Coolant So it’s always smart to play it safe and replace your coolant a littler sooner than the recommended interval. Yet, what does “normal” really mean? So many vehicles operate in extreme conditions from time to time. Automakers recommend coolant replacement intervals based on “normal” circumstances. But your cooling system may thank you for replacing the coolant a little sooner than recommended. Modern organic coolants can last a very long time. Why It’s Always A Good Idea To Replace Your Coolant A Little Sooner Than Recommended Each coolant has its own blend of additives to maximize corrosion protection in certain engines. There are many different additives available. That’s why coolant manufacturers use additives in their coolant. It doesn’t offer the same corrosion protection as inorganic coolant does. It’s not as effective when it comes to limiting corrosion in the cooling system. Organic coolant is a good solution for modern engines. Organic coolant works better with the metals used in newer engines (aluminum). Inorganic coolant works better with the metals used in older engines (steel and iron).This increases maintenance and ownership costs. Inorganic coolant doesn’t last a long time, thus it needs frequent replacements.So why did many automakers switch to organic coolant? A few reasons: Inorganic coolant is better at limiting corrosion than organic coolant. Why Did Automakers Switch To Organic Coolant? The corrosion resistance of IAT coolant.HOAT coolant offers the best of both worlds: OAT coolants last longer than IAT coolants, but they don’t do as good a job limiting corrosion within the cooling system. Organic acid-inhibitor technology (OAT).Many modern engines (post 2000) use organic coolant. These days, IAT coolant comes in the color green or the color yellow. Most if not all engines built in the 20 th century used inorganic coolant. Green coolant is inorganic coolant, which is also called inorganic acid technology (IAT) coolant. If you were around last century, you may remember that bright green was the color for coolant. What’s the difference between these types of coolants? Which one is right for your car? If OAT (Mopar P/N 68163848AA Purple) has been mixed with HOAT (Mopar P/N 68048953AB Pink or factory fill HOAT Orange, or any other coolants, it will be necessary to flush the cooling system.In general, there are 2 different kinds of coolant: inorganic and organic. This could show up as aluminum pipes turning black in the coolant system, engine overheating or leaks in the cooling system. Mixing these coolants could result in accelerated corrosion within the engine and cooling systems, an ammonia odor or debris particles floating in the coolant.įurther inspection may find corrosion in the system.
MOPAR COOLANT COLOR MANUAL
For heavy-duty truck and extreme-duty cycle applications, refer to the service information or owner’s manual for proper maintenance schedules.Ĭoolants of different technologies are not compatible or interchangeable (OAT, HOAT or IAT). OAT coolants have a service interval of 10 years or 150,000 miles. The new coolant is an organic additive technology (OAT). Chrysler has released a new engine coolant for the 2013 model year vehicles and beyond, for all engine applications except the 2.2L and 2.0L diesel engines.
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