Leaded gasoline was phased out in 1996. https://www.eia.gov/energyexplained/gasoline/history-of-gasoline.php https://www.eia.gov/energyexplained/gasoline/histo

Leaded gasoline was phased out in 1996. https://www.eia.gov/energyexplained/gasoline/history-of-gasoline.php https://www.eia.gov/energyexplained/gasoline/history-of-gaso...