Quote:
Originally Posted by PureShield
Except that's based off of American 91 octane not Canadian 91. Canadian 91 is more like 87-89 American.
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Quote:
Originally Posted by Tcoat
No. Canadian octane is measured in AKI exactly the same as the US. So 91 here is exactly the same as 91 there. Don't know where you heard different.
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As Tcoat said, both Canada and the US measure their octane ratings using AKI ((R+M) /2). Other countries use methods like RON and MON.