They started to phase in unleaded gas in 1975 but I guess it had started a couple years earlier, not for health concerns but because it damaged catalytic converters.
Yeah I was wondering if there was an angloid backlash of “I actually prefer leaded gasoline and will proudly huff the exhaust fumes because this is AMERICA.”
YOU’RE ALL MORONS!
No I understand the graph, I meant 40 specifically has low levels compared to years on either side.
oil embargo?
They started to phase in unleaded gas in 1975 but I guess it had started a couple years earlier, not for health concerns but because it damaged catalytic converters.
doesn’t explain higher levels in subsequent years tho
Yeah I was wondering if there was an angloid backlash of “I actually prefer leaded gasoline and will proudly huff the exhaust fumes because this is AMERICA.”