I am sold on using 87 octane in Canada. I was using 89 in the US west because it was less expensive (the whole ethanol rumble).
I would point out that there's some uncertainty to the way people usually measure mpg because of the judgement involved in filling the tank. I figured out a good way to get a solid reading though:
1) ride til you hit reserve and note the mileage.
2) add gas reasonably soon thereafter and note the amount of gas added.
3) next time you hit reserve note the mileage.
You now know that you've used exactly the amount of gas you added in 2) to travel exactly the difference between 1 & 3.
Last edited by Bill; 01/17/2009 10:10 AM.
