In the U.S., the phase-out of leaded gasoline began in the 1970s and was completed when the EPA banned the sale of leaded gasoline for on-road vehicles in 1996.

No-lead fuel caused valve issues requiring new valve seats and/or the use of a lead additive. For the diesel owner, ... If you are not already using a fuel additive regularly, ...

Q: I have a 1966 T-Bird with the 390 engine. Do I need to use a lead additive in the fuel? A: Technically, yes. From the top: Tetraethyl lead was used in gasoline from the mid-1920s until the mid ...

In 1986, the federal government outlawed the use of lead as a gas additive, and the mean blood lead level in the American population dropped more than 75% in 15 years.

Low-lead aviation gas – known as 100LL avgas – is used in aircraft with piston engines, ... This high-octane level has historically been attained by the addition of a lead-based additive.

If you are not already using a fuel additive regularly, ... In a gasser, the problems have been mostly fixed over time as the EPA began reducing the use of lead in gasoline in the mid 1970s, ...