GRANGEVILLE, IDAHO – More than 100 gallons of Swift Enterprises’ 100SF, powered an unmodified Pratt & Whitney R-2800 Double Wasp engine during three days of testing conducted at Anderson Aeromotive Inc. in Grangeville, Idaho. Test results showed that 100SF produced a higher detonation onset threshold than 100LL. The engine was operated at 115-145 octane takeoff power settings, and there were no indications of engine knock (www.swiftenterprises.com).