3 ms·Remember that avgas still uses leaded fuel (though that will hopefully improve soon).by foobarian 5y agoRemember that avgas still uses leaded fuel (though that will hopefully improve soon).floren 5y agoLeaded avgas is only used in small, propeller-driven aircraft like Cessnas. Jet fuel does not contain lead.foobarian 5y agoExactly. And to think it used to be in all passenger car gasoline!