You have 93 octane fuel! The highest octane we can get in the Great State of Colorado is 91...
It is said that the higher the elevation, the less octane needed for same results as a higher octane fuel. Could be true, but I really don't buy it. I know my Kawasaki Councours M/C runs better on higher octane fuel...
Anyone remember Hancock gas stations?? It seems like they offered 5 or 6 grades of gas....
BTW: Our Colorado gas (some of the worse in the country) is loaded with ethanol. Its' a touchy feel good thing...