What you filled
your tank with, then: When you gassed up at a Cities Service
station along the Turnpike, the gasoline the attendant pumped into your
tank had “tetraethyl lead” in it. Highly toxic, it was intended
to take the “knock” out of your engine.
What you fill your tank with, now:
When you pull up to today’s Sunoco station, you fill up with unleaded
gas. In 1970, the U.S. Clean Air Act required a 90% reduction in tailpipe
emissions, and began the phase-out of leaded gas.
The implications: People
increasingly questioned the car and its byproducts. Low-lead gasoline
was introduced in the 1970s as a result of increased public concern about
air pollution. Since passage of the 1970 Clean Air Act, airborne levels
of lead have decreased.