Piston Aviation Fuels Initiative Testing Two Top Fuels By Shell And Swift As the EPA is being pressured from environmental groups to release findings on the harmful nature of leaded fuel, the Piston Aviation Fuels Initiative (PAFI) group is working hard to find a substitute once Tetra-Ethyl Lead is banned by the FAA.
Source: aero newsSubstitute For Leaded Fuel Set To Be Released By 2018