The toxic additive that once helped cars run smoother
In short: This video explores why tetraethyl lead was added to early gasoline and how it was eventually phased out due to significant health and environmental concerns.
In the early days of the automotive industry, tetraethyl lead was utilized to improve octane ratings, reduce engine knocking, and minimize wear and tear on motor valve seats. However, the environmental impact of this additive led to a gradual phase-out beginning in the late 1970s. This process concluded in the United States when leaded gasoline was banned for all on-road vehicles in 1995.
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Sources
- Summary by Intellect · source: Why Lead Used to Be Added to Gasoline
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