Originally Posted by Oaklevel
Ethyl gas was a premium gas can't remember which brand & was not with ethanol. Two different animals.
Correct, Ethyl back in the day was leaded gasoline and get's it's name from tetraethyl
Here is a snippet of the history:
Tetraethyllead - Wikipedia, the free encyclopedia
History of TEL in fuels
Regardless of the details of the chemical discoveries, tetraethyl lead remained unimportant commercially until the 1920s. In 1921, at the direction of Dupont Corporation which manufactured TEL, it was found to be an effective antiknock agent by Thomas Midgley, working under Charles Kettering at General Motors Corporation Research.
General Motors patented the use of TEL as an antiknock agent and used the name "Ethyl" that had been proposed by Kettering in its marketing materials,
thereby avoiding the negative connotation of the word "lead". Early research into "engine knocking" (also called "pinging" or "pinking") was also led by A.H. Gibson and Harry Ricardo in England and Thomas Boyd in the United States. The discovery that additives modified this behavior led to the widespread adoption of their use in the 1920s, and therefore more powerful, higher compression engines.
In 1924, Standard Oil of New Jersey(ESSO/EXXON) and General Motors created the Ethyl Gasoline Corporation to produce and market TEL. Deepwater, NJ across the river from Wilmington, was the site for production of some of DuPont's most important chemicals, particularly tetraethyl lead (TEL). After TEL production at the Bayway Refinery was shut down, Deepwater was the only plant in the Western hemisphere producing TEL up to 1948, when it accounted for the bulk of the Dupont/Deepwater's production.
In the 1970s, Herbert Needleman found that higher lead levels in children were correlated with decreased school performance. Needleman was repeatedly accused of scientific misconduct by individuals within the lead industry, but he was eventually cleared by a scientific advisory council. Needleman also wrote the average US child's blood lead level was 13.7 μg/dl in 1976 and that Patterson believed that everyone was to some degree poisoned by TEL in gasoline.
In the U.S. in 1973, the United States Environmental Protection Agency issued regulations to reduce the lead content of leaded gasoline over a series of annual phases, which therefore came to be known as the "lead phasedown" program. EPA's rules were issued under section 211 of the Clean Air Act, as amended 1970. The Ethyl Corp challenged the EPA regulations in Federal court. Although the EPA's regulation was initially dismissed, the EPA won the case on appeal, so the TEL phasedown began to be implemented in 1976. Additional regulatory changes were made by EPA over the next decade (including adoption of a trading market in "lead credits" in 1982 that became the precursor of the Acid Rain Allowance Market, adopted in 1990 for SO2), but the decisive rule was issued in 1985.
Then EPA mandated that lead additive be reduced by 91 percent by the end of 1986. A 1994 study had indicated that the concentration of lead in the blood of the U.S. population had dropped 78% from 1976 to 1991.
In 1995, leaded fuel accounted for only 0.6% of total gasoline sales and less than 2000 short tons (1814 t) of lead per year. From 1 January 1996, the U.S. Clean Air Act banned the sale of leaded fuel for use in on-road vehicles. Thus, what had begun in the U.S. as a phasedown ultimately ended in a phase-out. Similar bans in other countries have resulted in lowering levels of lead in people's bloodstreams.