Id rather lower the octane a tiny bit than destroy my engine. We had a guy around here who crop dusted, and had MANY toys, and before we had any VP reps here, he always ran AV gas, then after finding poor sealing valves, and bad compression he did some reserch and found how dry it was, then He talked with some fuel guys and they told him just add a bit of ATF or some sort of 2 stroke oil to give it some lubrisity, it sure didnt affect his ETs any, he has a walley in his office from his 460 powered t bird. His name is Dale Bittner with Dales flying service. He has an abundance of AV gas so he used it. Now he has access to race gas just as easy as his AV gas so he runs VP.

Kasey