I ordered up a can of Race gas ultra from summit. Its like 35 bucks a can and (they say) you mix it with 4 gallons of pump to make 112. I'll let you know how it works. For me, its not about saving money, its about availability. If the concentrate works, it will just be nice to have easy access to fuel to cruise around on the street without any detonation issues. Ill put the real stuff in at the track.