Back in the 1970s when we switched to unleaded gas, what did the vehicles that ran on leaded gas do?
Back in the 1970s when we switched to unleaded gas, what did the vehicles that ran on leaded gas do?
Did they have to track down leaded gas? Did they just use unleaded? Did they suffer engine knock?
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It was phased out over time with both types being sold as all new cars used unleaded only. Eventually the old cars that used leaded gas aged out and were replaced with new cars.
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