Vegetable oil can be a possible substitute for petroleum-based products for many applications and is the focus of
research in this study. Besides being a renewable energy resources with instant and perpetual availability, vegetable
oil based products can also have the potential for reducing carbon dioxide and hydrocarbon emission, when used in
such applications as lubricant in internal combustion engines and in industrial processes. In this paper, the impact
of mixing mineral oil at certain proportions with vegetable oil is discussed its use as commercial lubrication oil is
also outlined, The tribological attributes are investigated through the well known four ball tribotester method. In the
experiments, castor oil is blended at volumetric ratio ranging from 20 to 80 % with commercial mineral oil, where
the setup is consictent with ASTM D4172. Results indicate that a mix of castor oil with commercial lubrication oil
rather than mineral oil, can bring down the diameter of wear scar. The mix exhibits a decrease in the coefficient of
friction when compared with lubrication oil. A belend of castor oil with some commercial lubricant oil has shown
a better tribological performance as compared to neat castor oil.