Sure, and any petrol engine can run on 78 RON fuel to. It's just that if you try to run it at full power you'll blow it up. Wee bit of a problem on takeoff.

Same thing with running certain large piston airplane engines on 100. They blow up.

> There are several options that involve no lead, generally substituting with ethanol

Ethanol is corrosive to aluminum. Thankfully airplane designers have never used aluminum in airplanes...