Sunoco Standard 110 Race Fuel vs VP 110 Racing Fuel

He seemed to think the motor was running lean and had a touch more wear than usual. I think Charles may have a point about the motor running lean on pump gas, as my motor were dynoed on race fuel. I don’t the needles much at the track, so it might have been lean (although I use an EGT). I could have asked him to dyno the motor on pump gas but then I’d be one of the few out of the many motors that he builds. So, when we looked at what was being spent on fuel, it didn’t seem like it was worth the money pump gas saved vs venturing into the unknown.