Mohammed Modu Aji - Department of Chemical Engineering, Faculty of Engineering, University Of Maiduguri, Borno State, Nigeria.
Shettima Abba Kyari - Department of Chemistry, Federal college of Education technical Potiskum, Yobe state, Nigeria.
Gideon Zoaka - Department of Chemical Engineering, Faculty of Engineering, University of Maiduguri, Borno State, Nigeria.

Neem oil and extracted Jatropha oil were modified to produce bio-lubricant. The bio-lubricant were analyzed for their chemical and physical properties such as density, acid value, sulphated ash content, refractive index, pour point, flash point as well as viscosities at 40 and 100oC and viscosity index forcomparison with the characteristics of a mineral lubricant (engen super 20w/50). The result of the analysis reveals that Jatropha curcas oil biolubricanthas high flash point (274oC), viscosity index (539), lubricity, and an acid value of 3.9, sulphated ash content was 0.038 wt%, and low pour point of0.23 0C, neem oil bio-lubricant also has a flash point of (262oC) higher than the characteristic of the commercial lubricant, an acid value of 1.9, highviscosity index (397), sulphated ash content of 0.018 wt% and low pour point of 1.3 0C. It was found that the bio-lubricants produced are comparable to the commercial standards for engen super 20w/50 lubricant

Jatropha, Neem, Bio-Process, Bio-Lubricant