Until then, here's a good podcast episode interviewing George Braly, the man behind G100UL. [0] Incidentally I recall a later episode mentioning that a couple

Until then, here's a good podcast episode interviewing George Braly, the man behind G100UL. [0] Incidentally I recall a later episode mentioning that a couple of decades ago someone was able to get an unleaded fuel approved for aviation in, iirc, Sweden. Unsure why that didn't get much traction. [0] https://aviationnewstalk.com/tag/unleaded-fuel/ https://aviationnewstalk.com/tag/unleaded-fuel/