AVTUR has no lubricants in it compared to diesel, it is just refined paraffin
There are no specifications laid down for lubricity of jet fuel, but,
In recent years the quality of petroleum feedstocks used by refineries has decreased. This has necessitated the use of severe refinery processes in order to produce jet fuels of high thermal stability and cleanliness. Unfortunately these processes remove the compounds that are responsible for a fuel's inherent lubricity. As a result, fuel lubricated engine components are experiencing greater wear and mechanical failure.
The incidence of lubricity related problems in commercial and military jet aircraft has increased over the past twenty years. This is a result of the need for more severe refinery processes to remove trace fuel species that adversely affect thermal stability and water removal by coalescence. These processes also remove trace polar species that are responsible for a fuel's inherent lubricity properties.
In the late 1960s, it was serendipitously found that a pipeline corrosion inhibitor had a significant effect on lubricity enhancement. The additive's original intended purpose was to decrease corrosion to fuel handling systems and transfer lines. The additive is effective as a corrosion inhibitor due to its surface-active nature. The active ingredient in most corrosion inhibitors is a dimeric organic acid, usually dilinoleic acid (DLA). It is the surface-active nature of the dimeric acid that causes the corrosion inhibitor to be an effective lubricity enhancer.
The use of a corrosion inhibitor as a lubricity enhancer is now required in all military JP-4 and JP-5 jet fuel. Unfortunately the additive can hinder water removal by coalescence. In other cases a fuel may have adequate lubricity initially and would preclude the use of the additive. Currently there is no lubricity specification for either commercial or military jet fuel. This has been due primarily to the lack of a test method; hence, the mandatory addition of the additive to assure adequate lubricity.
https://web.anl.gov/PCS/acsfuel/prep...-35_2-0003.pdf