The effect of two lubrication additives on the physical and chemical properties of refined soybean oil was studied. The two additives used were a complex blend of anti-oxidant; anti-wear and pour-point depressant-AP821 and AP820- used in the production of Super v and Visco 2000 brands of lubricants respectively. The physical and chemical properties of the soybean oil and base oil samples containing varying percent by volume of each additive were analysed. Results obtained show that the flashpoint of soybean oil increased from 256.6oC to 265oC and 284oC for the AP821 and AP820 additives respectively. This was better than the increase recorded for the base oil which increased from 208oC to 215 oC and 228oC for the AP821 and AP820 additives respectively. Other results obtained for pour point reduction, specific gravity and viscosity showed a positive effect of the additives on soybean oil.