GAMI’s G100UL Unleaded Fuel Successfully Powers Historic WWII Aircraft

According to GAMI, the warbird’s 2000-hp Pratt & Whitney R-2800 Double Wasp engine is the most powerful to fly on the G100UL fuel.

George Braly of General Aviation Modifications, Inc. waves to spectators from the cockpit of the A-26 after landing at Ada Regional Airport (KADH). [Courtesy: GAMI]
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Key Takeaways:

  • GAMI's unleaded G100UL aviation gasoline successfully powered a World War II-era Douglas A-26 Invader bomber for the first time.
  • The flight utilized the bomber's 2,000 hp Pratt & Whitney R-2800 engine, marking it as the most powerful engine to operate on G100UL fuel to date.
  • This milestone demonstrates G100UL's high-octane performance and its potential to support the future operation of warbirds and other high-performance aircraft.
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On Wednesday, General Aviation Modifications Inc. (GAMI) achieved another milestone in developing its unleaded aviation gasoline, G100UL, when it powered a World War II-era bomber, the Douglas A-26 Invader, for the first time.

The aircraft took off from Ada Regional Airport (KADH) in Oklahoma and flew over Lake Atoka during the 60-minute flight. According to GAMI, the warbird’s 2,000 hp Pratt & Whitney R-2800 Double Wasp engine is the most powerful to fly on the G100UL fuel.

“This big-bore radial engine operating at up to 48-inch MP demonstrates the excellent high-octane performance of the G100UL high octane unleaded avgas,” GAMI said in a statement. “The ability to successfully operate this engine as such on an unleaded fuel supports the continued operation of these and many other warbirds well into the future.”


Editor’s Note: This article first appeared on AVweb.

Amelia Walsh

Amelia Walsh is a private pilot who enjoys flying her family’s Columbia 350. She is based in Colorado and loves all things outdoors including skiing, hiking, and camping.

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