Originally Posted by dljocky
I've got a friend that lets me ride his S10, and it's a great bike. Love everything about it, except that you have to run premium/high octane fuel in it. Call me crazy, but that's a deal breaker for me. I've called Yamaha HQ to see if there was something I could do to the bike to run regular fuel and they said "nope". I know lots of folks are going to refer to what Nick Sanders did with non-premium fuel on his epic trip. Great bike though and it would fit ALL my needs except that one. Good luck!
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Completely a non-issue. I've run nothing but regular in mine. The only way to coax a knock out of the engine is by going about 30 MPH in 6th gear uphill and whacking the throttle wide open. Anybody who would regularly ride in that condition probably shouldn't own a bike in the first place.