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Leaded gas started being phased out in the late 60's. Catatytic converters, which can only burn unleaded gas, were made mandatory in 1975, so that pretty much ended the production of leaded gas.
Wiki User
∙ 15y ago
Wiki User
∙ 16y agoIn the very beginning of the internal combustion engine, unleaded fuel was used. Unleaded fuel was used way before lead was later added to fuel as an anti-knock agent. In 1975, this all changed, as lead was slowly removed from all fuel.
Wiki User
∙ 12y agoLead was removed from gasoline in 1975. When gasoline was first used, there was no lead in it. Lead was later added as an anti-knock agent.
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