[Adger Smith]

We have some winners...Basic.. rich lean octane..
The only thing that hasn't been mentioned is the chemical enhancement that AV gas has to help keep Carb ice from forming. It doesn't cool like racing gas when it evaporates/vaporizes. So it puts some heat in the induction system that race gas doesn't.
Personal Experience:
My 172 with the 300 Continental "6" engine runs better on a 50/50 mix of 100LL Av Gas and non ethanol 87 octane pump gas. Simply because the engine was designed for 85 octane gas. I have an STC to fly with automotive gas, but the mix is better.

BTY: Jeff and Bob I have an old friend that has been working for a company leasing planes to the Govt. for fire suppression. He started off flying a modified Neptune and moved up to a DC-10. Somewhere I have a video of him in the Neptune making a run on a ridge that was on fire... Cool stuff.