Bear with me here: So in Canada at your Shell station there's a sticker or something else that tells you how much ethanol is blended in with each particular fuel grade? If so, that's great and worth paying the extra 6-7% that 91 usually commands over 87. Down here in Kalifornia all the pump states is "Contains ethanol" or "Contains up to 10% ethanol". The actual amount is supposed to vary throughout the year. I've considered getting a test kit so I can try and find who consistently has the lowest ethanol content. I'm actually also considering 100LL for fuel storage for my Honda EU2000i generator because our junk pump gas ages so quickly it will foul the jets in the carb in a matter of weeks if you don't drain it from the bowl regardless of whether you added Sta-bil . I'm still holding out for that station that somehow is sourcing straight gasoline but I think it's a mandatory thing.