Lead Free Gasoline

Most of the companies during the mid to late 20’s were switching to leaded gasoline. This was the time when American Oil chose to continue producing and marketing it high end Amoco Gas as a lead free gasoline. This premium product was using aromatics instead of tetraethyl lead to increase the octane levels. This was decades before the environment movement of 1970s which led to more stringent auto emission norms and controls which ultimately mandated the universal phase out of leaded gasoline.

Amoco’s lead-free gasoline was sold at American's gas stations in the eastern and southern U.S. alongside American Regular gasoline, which was a leaded fuel. Lead free Amoco was introduced in the Indiana Standard marketing area in 1970. The Red Crown Regular and White Crown Premium gasolines marketed by parent company Standard Oil (Indiana) in its prime marketing area in the Midwest before 1961 also contained lead.