Fisher...I like Byron's Fuel, I got a new engine this past summer and changed back and forth between turbo heads and non turbo, after 4 weeks of racing you could hardly see any deposits on the head button with the Byron's Fuel. They use "Klotz" brand synthetic racing oils, which is the best stuff around. I get it at a Hobby shop about 30 miles away, for $21.00 a gallon for Racve Formula 3000 (30%).