This research work compares the tribological properties of three different nano-lubricants with ZrO2, CuO and ZnO as additives. The lubricant samples were prepared by mixing of nanoparticles in base oil (PAO 6) followed by ultrasonification to ensure homogeneity of the mixture. Steel samples were wire cut and the test surface machined to a roughness of 0.2 micrometers. The friction and wear tests were performed using Reciprocating Sliding Tribo-Tester at a load of 20N at room temperature of (36±3°C) and high temperature (of 100°C). Scanning Electron Microscopy (SEM) was performed to compare the nature of the wear tracks. The coefficient of friction was found to be lower when additives were used in all the three cases. Temperature was found to be influencing the wear phenomena. The wear was found to be lesser when nanolubricants were used compared to base oil at room temperatures. But at higher temperatures, wear was found to be slightly higher than the base oil in all the three cases. The results of the study demonstrated that the use of nanoparticles as additives is both economical and provides better performance when compared to mineral oil lubricants. © Research India Publications.