I run a special brew Helicopter AV gas. Its designed for Turbo Prop engines, has no Glycol as helicopters dont get high enough & you only get it from a tanker, heaps of lead & has a 108 rating. engine definately runs smoother on this brew than Ground Tank AV gas.
Somebody is yanking your chain, or you are trying to yank someones. Aircraft fuels boil down to these choices Jet A, Jet A-1, Jet B and Avgas. Since the first 3 are kerosene based for turbine type engines, that means any piston driven engine runs Avgas. And there are no special "brews"
