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good topic.
The best octane rating you can buy in eastern canada is 91 octane, cost now $1.41/ltr.
In eastern USA (Maine, NH, Vermont maybe even Mass.) the best octane is the same 91 octane.
1 year ago in Quebec, the best octane you could buy was 91 except around the Montreal and Eastern Township area some gas stations(Petro Canada) sold 93 octane.
I recall in the Mid to southern USA I could buy the 93 octane.
So, makes you wonder when your gas cap is asking for 97-98 and all you can give it is 91??? But the car seems to run ok. I'd really like to try the 97-98 to see if there is a difference.
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