The engine performance, fuel consumption and emission of a micro gas turbojet engine running B100 biodiesel fuel, kerosene, hydro processed renewable (HJ) fuel from dynamic fuels, and JP-8 fuel are reported in this paper. The data are recorded and analyzed in terms of the different fuels. Characteristic of the engine using the different fuels are studied and discussed. The results show that the engine performed consistently well in the wide range of fuel. It was found that, compared to the other 3 fuels tested, the biofuel characteristics were distinctive. The B100 fuel produced the least unburned hydrocarbon oxides of nitrogen but produced the most carbon dioxide and carbon monoxide, compared to the other test fuels. Results of the engine tests are discussed.