2017 Hyundai Sonata Coolant : POAT or PHOAT Type (Blue) ?

[ChrisD46]

Stock OEM coolant in my 2017 Hyundai Sonata was / is blue. I figured “Asian Blue” coolant would work but some differ I notice . Super Tech Blue coolant mentions POAT formulation while Zerex Asian Blue mentions PHOAT formulation … Which one should I use ?

 

[Nukeman7]

They are similar chemistry but just a difference in manufacturer semantics. Some suppliers refer to it as Phosphate Organic Acid Technology while others call it Phosphate Hybrid Organic Acid Technology because it contains both organic and inorganic components.

See Post #61 in this previous BITOG thread.

 

[ChrisD46]

Very helpful - thanks as it was a big confusing for me !

 

[Blinker]

I’ve been using Prestone Corguard in my Hyundais with ZERO issue. One of them being a 2018 Sonata.