Pump gas compression again

Yeah, the race gas concentrate is loaded with MTBE. Some users have plug fouling from MTBE accumulating on the spark plugs. The AV/Gas is really the best option as far as cost unless you can buy 100 octane leaded race gas by the drum at bulk cost and run it 50/50 with pump premium. I get mine about two to three gallons at a time in a can and take it to the service station to add before fueling up.