https://www.aopa.org/news-and-media/all-news/2013/september/26/swift-opens-facility
Swift unleaded avgas passes another test - AOPA
An unleaded gasoline that has passed every test in aircraft engines to date is closing in on production.
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https://www.flyingmag.com/aviation-consumer-live-g100ul-unleaded-avgas-flight-trial/
Aviation Consumer Live: G100UL Unleaded Avgas Flight Trial
Apr 28, 2025 - The Aviation Consumer talks with Jon Sisk, who recently conducted an exhaustive G100UL flight trial in his Lycoming-equipped Van's RV-14.
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