Lead in fuel has been extinct since the early 80's and was nothing more than a cheap octane booster with Premium having the most. I'm reminded of this thinking of some brands calling it Ethyl and years ago we had an Esso gas station run by an older couple. As it turned out the wife's name was Ethel and a friend of the husband said "John, you have been pumping Ethyl for many years" referring to John pumping gas for many years. Well unfortunately Ethel was standing beside John and John's friend received a slap for misunderstanding what the friend really meant.