well, as far as Minnesota Law goes, it's allowed to be used in collector cars...but not in modern cars/trucks.
WITH THAT SAID, it just isn't enforced by anyone. Before a good old fashioned Minnesota cold spell, I usually fill the tank with Non-oxy, cuz when the temperature goes well below zero, Non-oxy starts the car more reliably.
If you read the Non-Oxy sticker on a fuel pump in MN, it'll say, For use "only" in collector cars and recreational small engines...or some sort of wording.
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