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Politics : Politics of Energy -- Ignore unavailable to you. Want to Upgrade?

To: Maurice Winn who wrote (61619)	12/5/2014 7:36:41 AM
From: Eric	Read Replies (2) \| Respond to of 86355

Gasoline, when used in high- compression internal combustion engines, tends to autoignite (detonate) causing damaging " engine knocking" (also called "pinging" or "pinking") noise. To address this problem, tetraethyllead (TEL) was widely adopted as an additive for gasoline in the 1920s. With the discovery of the extent of environmental and health damage caused by the lead, however, and the incompatibility of lead with catalytic converters, leaded gasoline was phased out beginning in 1973. By 1995, leaded fuel accounted for only 0.6% of total gasoline sales and less than 2000 short tons (1814 t) of lead per year in the USA. From 1 January 1996, the U.S. Clean Air Act banned the sale of leaded fuel for use in on-road vehicles in the USA. The use of TEL also necessitated other additives, such as dibromoethane. First European countries started replacing lead by the end of the 80's and by the end of the 90's leaded petrol was banned within the entire European Union. en.wikipedia.org By 1976 you couldn't get gas with lead in it for cars here at the pump in the U.S. We still have 87 octane fuel for planes here in the U.S. and also 100LL (roughly 4 times the lead content of 87 avgas) but those fuels will be phased out in the next few years as the FAA completes testing for new aviation fuels that does not have TEL in them. You cannot use alcohol in aviation fuels.