Where i live we only get 95 octanes unleaded , and 98 octanes unleaded(super replacement) , im getting a slight better fuel economy on my SV with 98 octanes fuel , went from an average of 6.2L/100km(95oct.) to 5.8L/100km(98oct.) , considering that 98oct. only cost 0.02Euro more per litter than 95 ,the bike back fires a lot less , fells smother at low rpm's , im sticking with 98 from now on