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Tetraethyl lead was phased out of gasoline in the United States starting in 1976 and ending in 1986. Leaded gasoline caused lead to be present in automotive exhaust, which caused an increase in the lead content in people's bloodstream, which tends to reduce I.Q. and increase antisocial behavior.

Tetraethyl lead was used as an octane improver, and it also reduced valve seat wear. It damages catalytic converters, which are the primary emission control device in motor vehicles. Catalytic converters and hardened valve seats started being produced in 1975.

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Q: Why and when was lead phased out of gasoline as an additive?
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Related questions

What was used as an additive to gasoline?

lead


Why do people use unleaded gasoline?

In the past we used gasoline with a lead additive in it. Since lead is a heavy metal and can cause birth defects, the US government required that gasolines be lead-free.


Why was lead demand weaker after the 1970's?

The abandonment of lead as an anti-knocking additive to gasoline and the discontinued use of lead as an insulator in water pipes, contributed to lower demand beginning in the 1970s.


What gasoline brands contain mmt?

MMT gasoline was phased out in 2006. Because of this, there are no gasoline brands that currently contain MMT.


Does gasoline have benzene in it?

In the past it has been used as a gasoline additive.


Gasoline is a what?

A leaded gasoline is one that has a lead-containing compound in it. For many years the number one anti-knock agent was tetra-ethyl-lead. After epidemiological research showed that the lead dust coming from car exhausts was a major cause of lowered intelligence in children the use of this chemical was quickly phased out. The use of any lead compound in gasoline has been a Federal offence for some years now. Leaded gasoline is still available as a high octane aviation gasoliine.


What is a leaded gasoline?

A leaded gasoline is one that has a lead-containing compound in it. For many years the number one anti-knock agent was tetra-ethyl-lead. After epidemiological research showed that the lead dust coming from car exhausts was a major cause of lowered intelligence in children the use of this chemical was quickly phased out. The use of any lead compound in gasoline has been a Federal offence for some years now. Leaded gasoline is still available as a high octane aviation gasoliine.


Can you add gasoline to diesel motors as additive?

no that is a big no no


Does Ethyl Corporation still produce Tetra ethyl lead?

Yes, they certainly do. But they also produce other toxins like MMT, which is also a additive to gasoline.


IS the gasoline sold at Sam's Club free of MMT additive?

yes


Do you need a fuel additive lead when using unleaded gasoline in your 1974 BMW 2002 automatic?

Yes, Lead is good. Your valves could be damaged by using unleaded. Try http://www.batterystuff.com/fuel-treatments/OS6q.html This is real tetraethyl lead, the good stuff.


How does gasoline differ fro m gas made in the 1960's from today?

This is a chemical engineers nightmare.The real answer would take pages and pages.What you need to know:In the 1970s Tetroethel lead additive was banned from Gas. In the 1990s Sulphur was baned from Gasoline