Dont know if anybody is interested but thought Id post this up for anyone that may be thinking about it. I picked up some 100 LL av gas locally and tried it out. Had read some of the posts about it and came away with the impression that it probably would not make a noticeable performance difference, but maybe the lead would help extend valve life. Well all I can say is that there IS a noticeable improvement in performance. My bike runs better, especially when lugging at low rpms. Doesnt stutter near as much at low rpm, pulls ALL the way thru the rpm noticeably better. It always had good throttle response, now just starts pulling harder and at a lower rpm. I didnt measure it, but mixed it one part av gas to two parts high octane pump gas. Not sure what the long term effects of running the av gas mixture but seems worth it.