The drawback is liability - in order for this to work, the FAA has to blanket say "G100UL is allowed to replace 100LL". And if it doesn't go well, then it's on

The drawback is liability - in order for this to work, the FAA has to blanket say "G100UL is allowed to replace 100LL". And if it doesn't go well, then it's on the FAA for having let it happen. The price increase is also key and we're working on two assumptions - That GAMI isn't lying and the price increase will only by what they say, and that engine maintenance will in fact be less. Because it's already expensive for a person to train to become an airline pilot and this will make it worse as we head into an extreme pilot shortage in the near future. There's also a fact that no one likes - the level of lead pollution coming from this is pretty minor. I know we all want to be "no lead ever!" but, as someone posted earlier, the amount of lead a person ends up exposed to when they are neighbors with an airport is nowhere near a level that's considered harmful to any extent. And if battery powered everything is going to start taking over general aviation, along with aviation diesel motors that can run jet fuel, then what's the rush to replace 100LL. It's on a limited timeline already. Could be worse, though. They could be trying to force ethanol on us.