Since the advent of ultra-low sulphur diesel fuel demand to meet environmental regulations, the sulphur removal process has been introduced in the petroleum industry. But ultra-low sulphur, unadditized diesel fuel has very poor fuel lubricity,resulting in a shorter diesel injection pump and engine lives.This is due to the fact that the processes such as hydrotreating in petroleum refineries that remove sulphur from diesel fuel also remove heterocyclic nitrogen and oxygen compounds that are known to provide the fuel with lubricity [16]. To restore the lubricity of diesel fuel refiners regularly add various lubricity additives in the diesel fuels. Fatty acid esters can act as a lubricity additive for diesel fuel.