The use of Biodiesel is increasing all around the world which makes it an alternate substitute for Diesel In the current study Linseed oil is used as the alternative for Biodiesel with methanol additives. The Blending ratios used were B20, B40, B60, B80, B100, B20+5%, B40+5%, B60+5%, B80+5% B100+5%, B20+10%, B40+10%, B60+10, B80+10%, B100+10%. The experiment was carried out on a 4 stroke diesel engine which runs at a maximum speed of 1500 rpm with maximum rated power of 5.2kW. The experiments results indicates that B20+5% shows better performance characteristics and B40 + 5% shows good performance characteristics. The emission tests showed that CO2 emissions of the B20+5% were lower than that of diesel. Though lower than diesel, the performance characteristics of B40+5% were better than the other blends.