Coolant recommendations

Any HOAT (hybrid organic acid technology) ethylene glycol coolant would be a good choice.

Zerex G0-5 is a HOAT ethylene glycol coolant.

So is Zerex Asian formula (blue).

I have standardized on Nissan brand 999MP-AF000P Green L248SP Engine Coolant for all of my vehicles because: (1) it is a HOAT type ethylene glycol coolant, (2) one of my vehicles is a Nissan that was filled with it at the factory, (3) all my vehicles require a HOAT type ethylene glycol coolant, (4) it makes sense to only need one coolant on the shelf, (5) I can buy it at the local dealership for about the same price as Zerex, and (6) there is less confusion in my life when coolant is green and not some rainbow of colors.

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Some interesting articles:

https://www.hemmings.com/blog/2014/08/01/tech-101-the-colors-of-antifreeze/

http://knowhow.napaonline.com/what-is-hoat-coolant-4-things-you-need-to-know/

http://www.hastingsfilter.com/Literature/TSB/05-2R1.pdf
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