AVGAS 100LL: Contains a lower amount of tetraethyl lead and is blue in color. The "LL" stands for "Low Lead." Jet fuel is used in aircraft with jet engines, turboprops, and turbine engines.

European airlines are this year expected to meet a mandate of 2% SAF use in their jet fuel, with that set to rise to 6% by 2030. But many have lamented the high cost of the fuel, which is ...