This is mainly a question for Duke but anyone with knowledge feel free to chime in. I'm putting a motor back into my 56 that has been rebuilt so the entire cooling system is completely drained. I've read Duke's posts recommending HOAT antifreeze for older systems and I'm wondering if anyone knows if the new Prestone yellow "mix with anything" antifreeze is a HOAT or OAT product. I can't find any info relevant to this on their web site or on the packaging.
HOAT Antifreeze
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