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Yes Canadian octane ratings are the same as US. Alberta has 94 octane which is a 10% ethanol blend in some stations, but most stations are 91 octane straight gasoline.
Oklahoma 91. Many have 10% ETOH. We have two local stations that advertise NO ETOH. I go there. They also sell race fuel in three grades. Funny, it was always cheaper there but now its the same at my local track so I buy it there. No sense in hauling it up there...