General aviation’s need for a high-octane fuel to power high-­compression piston engines required avgas makers to add tetraethyl lead before delivery to prevent damaging engine knock ...

“When you change the fuel, you change a primary element of this industry.” Tetraethyl lead (TEL) is added in small amounts to aviation gasoline (avgas) to boost the octane number. Avgas must ...

One of the first things you learn when starting to fly is how to properly fuel your aircraft. Most aviation gas (avgas) will come in 100 octane low-lead (100LL). Other grades include leaded 100/ ...

The program’s signatories are working towards a replacement for 100LL avgas for aircraft requiring higher octane than the currently available 94UL unleaded fuels. “This is another important ...

(Some high-performance aircraft use avgas with an octane rating as high as 145.) In 1990, Congress amended the Clean Air Act to mandate the removal of lead from all non-road vehicle fuels within ...

They produce aviation jet fuel right now and they [can] produce ... There are already unleaded 94-octane substitutes for engines. Others are working on additives that will replace tetraethyl ...

General Aviation Modifications Inc. (GAMI) has developed an unleaded 100-octane AV gas that was finally approved for general use in piston airplanes by the FAA on Thursday. Despite leaded fuel ...

the latter of which still doesn’t solve the octane problem. So why, a century after its inception at General Motors, is leaded fuel still being used in piston-based aircraft? The conclusion ...

piston-engined aircraft use 100-octane fuel called Avgas 100 or Avgas 100LL because of its high performance and reliability. The piston engine is also called a reciprocating engine, since its ...

The U.S. House of Representatives voted Thursday to require airports to keep selling leaded aviation fuel indefinitely. The small-plane fuel is the biggest source of airborne lead pollution in ...

Rocky Mountain Metropolitan Airport said Wednesday it will fully shift from the use of toxic leaded aviation gasoline to unleaded fuel at its facility within four years. If the Jefferson County ...