This document evaluates the performance and emissions of a single cylinder diesel engine running on ethanol-biodiesel-diesel blends. The key findings are: 1) Engine tests were conducted at varying loads using blends of D80B15E5, D70B20E10, and D70B25E5 and results were compared to neat diesel. 2) The D70B20E10 blend showed lower CO and HC emissions than other blends and slightly higher thermal efficiency than diesel. 3) Biodiesel's higher density and lower calorific value led to slightly higher fuel consumption for blends compared to diesel.