I use Sunoco Ultra 94 in mine.
If I highway drive sanely I think it'll do in the 220s before hitting reserve. But it's a pig around town and screwing around
If you feel you might be getting a better additive package or something with the higher octane fuels, go for it, but otherwise you're just wasting money, and probably losing a little mileage and power, by using higher octane fuel than necessary....
Consider switching to Shell 91. I'm pretty sure nothing more than 87 octane is required by Yamaha in the owner's manual. If that's true than anything above 87 is technically a waste, and doing nothing for the bike. Petro Canada's 94 (previously Sunoco 94) has just as much ethanol as their lesser octane options they sell. However, Shell 91 is a higher octane (if we think it makes a difference on the bike), but for certain no ethanol makes a difference and Shell 91 has none.
Unless you've raised the compression ratio, which would pretty much mean new pistons, I doubt if the octane requirement has changed. Different cams and/or (particularly) ignition timing <i>could</i> possibly require it, especially if timing was advanced significantly. Stock does not. I guess there's no way to know for sure unless you hear pinging or had a knock sensor with a data logger mounted to the engine.
I use 94 in my cars (a supercharged Mustang and a Stage 2-tuned STi). I don't use it in the bike for any other reason than the equivalent of muscle memory I guess. Hell, I even put the stuff in my old lawn mower (I usually tank-up the jerry can while filling one of the cars so...)
Shell Canada's website indicates that their "V-Power NiTRO+ premium" has no ethanol so I'll give it a try. I assume that the "V-power" premium available across southern Ontario are all this "NiTRO" blend?
Amen to that.
I run 87. Stock except slip on. Unless your tuner says this is a -- program. Run 87. Ethanol free only if it sits a lot.
Anything else is a waste of money. Don't mean to sound like a pric about it. It just is the truth.
As stated in the manual.
I empty about a tank a day to day-and-a-half, and I've tried them all. The only difference I have ever noticed is when using 87 from a Kroger brand store there is a slight ping when revving off idle. Otherwise, mileage was identical and power from butt Dyno was no different.
I usually get 140 (miles) before the f-trip and have gone 179 out of a tank that was bone dry ran out of gas. I commonly see 160 out of a tank.
Save yo dollars mayn!! ��