An arizona company called Airworthy AutoGas plans to start producing a high-purity, low-vapor-pressure 93-octane unleaded aviation gasoline this fall that the company says could replace 100LLavgas in about 80 percent of piston airplanes. "A growing number of general aviation aircraft do not require 100LL avgas or a 100-octane unleaded drop-in replacement," said Mark Ellery, Airworthy's director of business development. "That, coupled with the scarcity of suitable ethanol-f ree automotive gasoline in the marketplace, resulted in the development of Airworthy AutoGas."
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