Jatropha oil has been known as alternative substitute for diesel fuel but its potential use as lubricant is not much known yet. Chemically modified jatropha oil (CMJO) has been successfully synthesized through modification process of hydrocarbon chain at the triglycerides structure. This study is meant to investigate tribological characteristics of CMJO as potential renewable lubricant additives. Tribological characteristics of the oil were acquired by using pin on disk test configuration. The contact material was 60 HRC steel disc and 34 HRC steel pin. Paraffin oil and 2.5% and 20% CMJO in paraffin oil were used as test oil. The test was conducted by step load method within the range of 100–500 N for each 6 minutes at 120 rpm rotational speed. It was found that addition of chemically modified jatropha oil shows good effect in improving boundary friction but no significant effect to wear preventive was found.