Leaded is slowly going away, but regulation means these changes take many, many years and dollars to implement and test. It will be similar (worse?) implementi

Leaded is slowly going away, but regulation means these changes take many, many years and dollars to implement and test. It will be similar (worse?) implementing a new type of fuel for commercial jets, especially when it comes to wide adoption across a majority of countries around the world. Basically you need something which is as least as reliable, clean (I.e., won’t clog/solidify), non corrosive, etc. and remain that way after being mixed with standard jet fuel. I too want to see alternatives but expect to see more failures than success at this stage.