The point I was trying to make is, there is a lot of monkey see, monkey do, without knowing why. I don't know enough about fuel chemistry to know if it is OK or not. I do know there is more to gasoline then the lead, and the octane rating. A couple of things that come to mind is the Reid vapor pressure rating , and the temp of vaporation. If you go to some of the race fuel sites, you can see the number of points of comparison of the different fuels.
