Abstract A pyrolysis reactor was designed and fabricated for the production of bio-esters used in formulating green lubricants for the drilling industry. Samples of Tectona Grandis, Eucalyptus Torreliana, Jatropha Curcas leaf and Cornhusk were each pyrolysed in the reactor at 5000C. Bio-oil obtained was analyzed for their Density, Acid value, % FFA and Viscosity at ambient conditions. Bio-oil was upgraded by esterification using Methanol and synthesized Silica Sulphuric Acid (SSA) as c...