[TylerE]

You’re confusing quite a few things here. Ethanol wasn’t put in gasoline until decades after the lead came out.

Ethanol was absolutely added for profit… but much like HFCS, it was about propping up big agribusiness.

[maxerickson]

Ethanol replaced MBTE. MBTE is awful (any persistent groundwater contaminant is awful) and it's a good thing it's gone.

Higher percentages of ethanol are arguably not worthwhile, but getting rid of MBTE is almost certainly the right choice.

[fomine3]

This is what I meant https://en.wikipedia.org/wiki/Charles_F._Kettering#Flxible,_...