[mrguyorama]

>lead in gasoline was used for motor longetivity

Nope. Tetra-Ethyl lead as a fuel additive, primarily for octane boosting, was invented as a "cheaper alternative" to what would normally be used to boost octane: Ethanol. Surely for only coincidental reasons, having a chemical product that they could patent and prevent anyone else from manufacturing made them a whole lot more money than using Ethanol which anyone could make and market and compete.

Leaded gas was a fucking profit motivated thing.

The point of us putting ethanol in gas is multifaceted, but not even remotely about climate change: The octane booster we used after we removed was MTBE. MTBE had a problem where it would constantly leak out of fuel storage and poison families, cause birth defects, you know, toxic shit. So we FINALLY just said fuck it, put ethanol in gas like we should have been doing since the 20s.

Other effects it had: Immediately reduce US gasoline usage by 10%. Subsidy to farmers.