Preparation of an aviation fuel composition

An aviation fuel composition, comprising:

• 5-15 wt-% of a first jet fuel component originating from one or more of:
• kerosene fraction (TOP PE) derived from tall oil pitch (TOP),
• kerosene fraction (FATS PE) derived from a mixture of sludge palm oil, palm fatty acid distillate and animal fat (FATS), or
• kerosene fraction (ULO PE) derived from used lubricant oil (ULO);
• and
• 85-95 wt-% of a further jet fuel component;
• wherein the aviation fuel composition has a wear scar diameter of 0.78 mm or less, as measured with BOCLE lubricity test method according to ASTM D5001, such that the wear scar diameter measured for the fuel composition is at least 0.04 mm lower than the wear scar diameter obtained based on the first jet fuel component and the further jet fuel component.

A method for decreasing a wear scar diameter for a fuel, comprising:

• blending a further jet fuel component with a first jet fuel component to form a fuel blend, wherein the first jet fuel component originates from at least one or more of:
• kerosene fraction (TOP PE) derived from tall oil pitch (TOP),
• kerosene fraction (FATS PE) derived from a mixture of sludge palm oil, palm fatty acid distillate and animal fat (FATS), or
• kerosene fraction (ULO PE) derived from used lubricant oil (ULO);
• wherein the fuel blend has a wear scar diameter of 0.78 mm or less, as measured with BOCLE lubricity test method according to ASTM D5001, such that the wear scar diameter measured for the fuel blend is at least 0.04 mm lower than the wear scar diameter obtained based on the first jet fuel component and the further jet fuel component;
• wherein the fuel blend contains from 5 wt-% to 15 wt-% of the first jet fuel component and from 85 wt-% to 95 wt-% of the further jet fuel component.