There ARE coolants that are blue-green, as used in some Hyundai/Kia products, some Nissans, and some Hondas. I should also add, that G11 is inky blue, it is NOT "blue-green". Never use a coolant for Asian cars in any VW product. Euro spec coolants DO NOT contain phosphates. They also contain silicates but so do Euro spec HOAT coolants. That's why I included the Asian coolants. The take away here is that not all HOAT coolants are created the same. An OAT coolant that contains phosphates is technically a HOAT coolant. Asian specification coolants are PHOSPHATED OAT coolants. OAT technology with a small amount of silicates added.Īsian Blue & Asian red are the exact same coolants except for the color. G05: a HOAT coolant that is basically the same formula as G12++. Non-OAT formula, contains borates, phosphates, and silicates. G48: The old VW G11 formula, the green/blue stuff. The amount of glycerine based glycol is around 10% of the total glycol content. All G13 is VW specifies a little bit of glycol derived from glycerine instead of 100% petrochemical based. Don't get all hung up on G13, it's not that special. The hybrid means some silicates were added. G40: VW G12++ and G13 compatible, HOAT (Hybrid Organic Acid technology). The first OAT (Organic Acid Technology) coolant This includes anything made by Prestone and Peak. A very brief description of each coolant starting from left to right.ĭex-Cool: Run away from anything that has Dex-Cool on the label. Not all NAPA stores stock all the varieties of Zerex coolant. This is the first time I saw all the Zerex products together. I took this photo at a NAPA store a few months ago. Contains some silicates and glycerin made from renewable sources as a substitute to some of the ethylene glycol. Contains silicates, borates, and nitrates. They talk about VW coolants around the 10 minute mark. I can demystify all the confusion about VW coolants.
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