9/1/2023 0 Comments Engine coolant color chartDo not mix two different types of coolant/ antifreeze.While it is okay to switch to a new coolant, here are a few points to keep in mind: Note When You Switch to a New Coolant/ Antifreeze This article will analyze Mopar coolant as equivalents in these two categories. But, are there any equivalent options to Mopar? Mopar is a famous coolant/antifreeze brand used across the board. However, OAT and HOAT are more popular these days. It does this by ensuring that the cooling system does not freeze when it is cold and removes excess heat that can cause corrosion.Ĭoolants are classified into three main types: IAT, OAT, and HOAT. It won’t tell you if the coolant is still protective against corrosion though.Coolant, also known as antifreeze, protects your engine from effects of extreme temperature. A tool called a ‘coolant hydrometer’ can be used to check the specific gravity of the coolant. It’s worth noting though, that even though the liquid may still show as ‘full’ in your tank, the active properties of the chemical composition may not be working anymore (ie. Some vehicles require it every 2 years whilst others can come with a ‘lifetime’ blend of coolant. Check the owners manual for your vehicle of with your service dept. This again depends on your specific vehicle’s manufacturer recommendation. Tap water or well water is not recommended due to the minerals in the water. For temperatures below that, up to 70% coolant concentrate can be used. From concentrate, most of the time a 50 percent coolant and 50 percent distilled or de-ionized water dilution is recommended.This will protect the system from freezing to about -34 F. Which could then lead to an expensive doctors bill. Check the owners manual.įirst, check to make sure the solution of coolant/antifreeze you buy is not already pre-diluted. Mixing the wrong types could cause radiator and cooling system damage (which could lead to engine/waterpump damage) and a repair bill that’ll make you pass out on the floor. Unless you’re an expert on the exact chemical composition and reactions of the various types, keep it simple and stick with what the manufacturer recommends. For example, Toyota has green and red, but it depends on the year and model of the vehicle as to which kind is needed. Various aftermarket companies and vehicle manufacturers use different colors. You can also check with your (manufacturer) dealership parts department. Check in your owners manual to see exactly which type of coolant to add to your vehicle. However just because it’s the same color doesn’t necessarily mean it’s the same type. Typically orange or yellow.Īs a quick guide, if your topping up the coolant levels, use the same color as is in the vehicle already. Longtime MOTOR readers know that the color of the coolant dye really is. This has silicates and has an extended life lasting up to 5 years. In pictorial language it says Do not use orange coolant yellow coolant is okay. Hybrid Organic Acid Technology (HOAT)- A mix of the above two types of coolant.Expect to see either blue, green, red, or yellow. Whatever color the fluid is in the reservoir is your engine coolant color. Check the radiator overflow reservoir, which is clear. Provides high-temperature protection for aluminum. Engine coolant is all kinds of colors so, thankfully, you can tell the color of the coolant in your automobile by popping the hood. Organic Acid Technology (OAG)- Found in most newer cars, does not contain silicates or phosphates but has azoles and neutralized organic acids (corrosion inhibitors).Lasts around 2 years. Usually bright green. Inorganic Acid Technology (IAG)-Typically used in older cars up until the mid-90s in the U.S, contains phosphates (corrosion inhibitors) and silicates.Coolant colors yellow and red 3 main types of coolant
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