I have been doing more looking since I asked about aviation fuel.I found Cam 2(100 octane unleaded) at a gas station a reasonable drive from me.Anybody use this with good results?I also found out I can buy Sunoco Gt 104 inleaded race fuel by the drum.It is 104 octane and listed as off road.Does anyone know if either,both,or neither of these eat 02 sensors?Bruce