In order to improve the performance and emissions of internal combustion engines as a consequence of the growing cost of fossil fuels and the increase in pollution, scientists are searching for alternative fuels made from renewable sources. The objective of this research was to replace conventional diesel with blended fuels by testing mixtures of biodiesel, methanol, and nitromethane in an engine at different engine speed (1200-2100). The tested fuels were Diesel (D100), B10, B10NM1, B10NM2, and B10NM3, and the highest ratio of Millettia pinnata to diesel is 10%. Experiments were done on a VCR diesel engine using diesel, methanol, and nitromethane mixtures to determine the optimal blending ratio and engine operating conditions for enhancing performance and reducing emissions. The findings indicated that improve thermal efficiency, lower smoke, CO2 emission but higher NO emission for blend of B10NM1