Well, sure it's going to be toxic. Drink enough gasoline and you'll die, whether it's aviation gasoline or not. And aromatics are carcinogenic etc. (then again,

Well, sure it's going to be toxic. Drink enough gasoline and you'll die, whether it's aviation gasoline or not. And aromatics are carcinogenic etc. (then again, aromatics are present in many other fuels such as regular gasoline and kerosine). I think the best one can hope for is that the 100LL replacement won't be significantly nastier than regular car gasoline. But already that would IMHO be a significant step forward compared to the status quo. And no, I don't work for the chemical industry, or anything related to that really. But yes, I've heard of such cases where the replacement for some banned product turns out to be even worse. I do think one should be very careful about trusting environmental statements by the chemical industry, or any industry for that matter. Just like one shouldn't trust them blindly, I don't think a blanket dismissal of anything new they are doing is warranted either.