Bigbill is correct, you only really need high octane for high compression. Higher octane does seem to run smoother in my bike so thats all I run. Not cheap to ride anymore though when Wendy and I fill up it;s usually $20 or more IN A GD BIKE!!!!

I learned all I need to know about life by killing smart people and eating their brains.
Eat right ,Exercise ,Stay fit, Die Anyway!