After almost disappearing from the aviation market, the high-octane fuel is now much more readily available.

In World War 2, American researchers developed a high octane fuel, 115/145 – numbers which indicated antiknock values coupled with the rich and lean fuel-air mixture. Additional power, which was achieved without risking any damage to the engine, allowed for an extended full throttle operation time on the new and highly advanced piston engines such as the Rolls Royce Merlin. This new fuel was primarily used in this type of supercharged hi-powered engine with a very high compression ratio, where 100 octane aviation fuel was not good enough. In turn, the development of this fuel allowed for a further development of the piston engine.

With the rise of a jet era, however, Avgas 115/145 was slowly withdrawn from the market and replaced by the low lead 100LL. Only small amounts of 115/145 were produced for specialist airshows and endurance flights.

Recently, after a period of research and development by engineers in its headquarters in Plock, Poland, Warter Aviation has revived the refining of Avgas 115/145 and, it says, the final product exceeds the quality and safety norms applicable to this type of fuel.

Janusz Pilarczyk, Director of the Research and Development Department of Warter, says: “The performance number test result of the first test batch met and exceeded the minimal values for an aviation fuel and was on a level of 151,5! The final product also exceeds all the safety and quality norms for aviation fuel.”

Warter now offers delivery of any quantity of Avgas 115/145 anywhere in the world.

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