Best gas in Canada for Diablo tune

[Lawsonity]

I've been running the canned 87 tune for a couple weeks in my 2017 5.3 Sierra and I'm looking to switch to the Diablo tune as my tank is getting low. I was planning on running Chevron 94 but now I'm seeing that it isn't even as good as 92 in the States. I really want to run the 93 with the advanced timing and eventually get it tuned by Lew but if our gas up here is really that shitty should I just stick with the 91 to be safe? Hoping someone has gone through this and can give me some insight.

[06MonteSS]

should have Esso up there.. Esso is exxon in canada.. mobil, exxon (esso), sunoco, amoco, bp, chevron are usually the best brands to use. don't use shell...

[Lawsonity]

Hey Lew, do these motors run better on 10% ethanol or straight up gasoline? I'll be sure to avoid Shell, thanks.

[06MonteSS]

10% ethanol is fine, that's what it's setup for stock anyway.. as 99% of gas stations are all e10 anyway nowadays..