The problem here was the regulator injected into the process has gone full snail speed on approving unleaded for aviation use. Oh, and as far a liability goes,

The problem here was the regulator injected into the process has gone full snail speed on approving unleaded for aviation use. Oh, and as far a liability goes, that would be the FAA that held things up, not the engine manufacturers, gas producers or plane owners. So the regulator was the problem.