An experimental investigation is carried out to establish the performance using silicon dioxide (SiO2) and Titanium dioxide (TiO2) as nanoadditives in diesel, blended with different proportions per unit liter diesel. These nanoparticles are synthesized by high energy ball milling method and characterized by using characterization techniques such as SEM, EDAX, and XRD. The nanoparticles are blended by means of an ultrasonicator to achieve stable suspension. It is observed that the blends are stable which are suitable for the performance test on the compression ignition engine. The fuel properties of Diesel, Diesel + SiO2 Nanoadditive and Diesel + TiO2 Nanoadditive in different proportions have been studied and compared according to ASTM standard test methods for biodiesel. The present work mainly focuses on comparing the different nano particles in different proportions with diesel to improve the performance of compression ignition engine. The acquired data is studied for various parameters to determine the performance of the CI engine. The result shows a considerable enhancement in performance due to the influence of SiO2 and TiO2 nanoadditive addition in diesel.