FZRSupport: the FZROnline Archive

ok so all my bikes ive owned so far have specifically said use premium unleaded gas... well after googling yamaha fzr600 i was reading an article where it said use normal 87 octane gas... so im confused and i was just curious what everone else is using... please take you time as i just filled my tank with 91 octane so its going to take alittle to empty it... thanks for all yuor info...

ps: the only upgrade i have is a vance&hines pipe... thanks...

I use regular unleaded....thats it.

I use premium (93 octane here in Dothan, AL), but I have a Factory Pro Ignition Advancer, and am worried about possible detonation. You should probably be good with just regular unleaded.

I use regular unleaded 87

My FZR got fed 87. Tried higher octane and didn't really notice a difference aside from a lighter wallet and slightly worsened performance.

please please please please only run the recommended 87.

i run only sunoco or shell fuel and she doesn't feel quite right with anything more than 89
87 is the smoothest and best all around performance

Like he said ^ . Run the lowest octane you can get away with(no ping? it's good enough).

I have ign advance and have tweaked my cam timing for midrange, and jet quite lean. 87oct is good 85% of the time, but will ping high load, high revs so I use 89.

Run as low an octane with out pre-ignition/detonation as you can. If you're on pretty much stock setup run the 87 as the manual recommends. For folks that have their motors twisted up a bit tighter they will likely need a higher octance. Somebody really need to do a sticky on octane numbers and what they really represent. The higher the number is not necessarily better fuel. And AIRC up to 10% blended fuels are also acceptable in these motors. But again check the manuals that are online as they tell you there if your original owners manual is MIA.