The dimensionless lubricity number (LN) is used to determine how well a fuel provides lubrication to the engine and is calculated based on the roller wear scar stress, the elastic contact stress, and the coefficient of friction. The calculation and detailed method have been comprehensively described in a previous work [10]. In the present work, 1 vol.% of WME,WEE, and WMEE (3:3) were added to kerosene base fuel and lubricity was measured. Properties of the kerosene base fuel are shown in Table 7. Coefficient of friction, wear scar area, and lubricity number of kerosene base fuel treated at 1 vol.% of WME, WEE, and WMEE (3:3) are shown in Table 8. All the three esters showed substantial improvement in the lubricity.With 1 vol.% addition of WME, WEE and WMEE (3:3) to kerosene base fuel, lubricity numbers of the treated fuel were increased from 0.689 to 0.818, 0.916, and 0.823, respectively (Table 8). The LN of WMEE (3:3) was higher compared to WME and WEE. The higher LN of WMEE (3:3) may be the contribution of some unknown compounds present along with the ester. At 1 vol.% treat rate of WMEE (3:3) in reference fuel kerosene, lubricity number of treated fuel showed an improvement of 33%. The wear scar and coefficient of friction also decreased substantially by addition of 1 vol.% of WFG esters in kerosene.