I see. My point on the other hand has nothing to do with the lack of
greeness of 100LL. My point is that the bromine in the lead scavenging
agent is corrosive to the engine after the combustian event. We live
with it because the high compression engine needs it to get rid of the
lead. But for 1:7 compression engines this corrosive compound is an
entirely unnecessary evil because the engine doesn't need the extra
octane from TEL. By getting rid of TEL we get rid of bromine in the
engine (lead bromide reacts with water to form hydrobromide acid). Too
bad mogas is the only unleaded fuel we can get for our LC engines at
this point.