Eric Lawson
Well-Known Member
I was just curious as to what octane gasoline most on here use in there FZ1? Although the owner manual says 87 octane is fine, i have always used mid grade 89. A friend of mine that had gen 1 FZ1 always ran 93 Octane premium. I dont know if the extra cost per gallon for premium amounted to any performance gain or would make the bike run better? Also does higher octane become more important after you put aftermarket exhaust on?