u/Standard_Risk_2877

I have a 2017 Mazda3 2.5L Skyactiv-G. The manual says max E10, but I’m now seeing E15 (up to 15% ethanol) at Ontario pumps, even on some 91 fuel.
I used to think 91 = safer E10, but that doesn’t seem reliable anymore. I’ve also seen claims that Mazda Canada now considers E15 OK for 2013+ models, which conflicts with the manual.
At Shell, 93 V-Power still seems to be E10, but it’s a big price jump for a car that only needs 87.
So I’m wondering:
Are you just running regular 87/E15?
Any noticeable issues or KPL changes?
Is anyone still paying for 91/93 just to avoid ethanol?
Any confirmed E10 stations left in Ontario?
Trying to figure out if premium fuel is worth it or if 87/E15 is fine now.
Thank you !