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The higher portion of biodiesel blended fuel will result in lower power output since biodiesel itself has lower energy input (B20 gave about 3% lower torque output at peak torque speed). In the ELR (Engine Load Response) Test Cycle, biodiesel blended fuel emitted less smoke than diesel fuel, while CO and NOx emission of biodiesel blended fuel and diesel fuel are comparable. Biodiesel particulate matter (PM) seemed to be higher than diesel fuel. In addition, additized biodiesel blended fuels (B5, B10 and B20) proved qualitative in oxidation stability, acid value, etc. Biodiesel specific lubricant confirmed its functions by evaluating the viscosity increase, fuel dilution, TAN, TBN and wear metal content during engine durability test. The used oil analysis affirmed that the lubricant could effectively be used with particular biodiesel blended fuel in advanced, heavy-duty common-rail DI diesel engines.

New green fuel technology derived from bio-based oil so-called Bio-Hydrogenated Diesel or BHD has been successfully formulated and evaluated with the Euro IV light-duty pick-up diesel common-rail engines and vehicles. Research program has been separated into 4 main working groups which compose of the fuel formulation group, the material compatibility group, the engine and fuel system evaluation group and the vehicle emission/drive-ability and durability group. The effects of target BHD blended fuel on advance technology diesel engine compared with standard biodiesel B5 fuel used in Thailand have been fully evaluated by a reputable car manufacturer and national oil company in Thailand. The formulation of BHD target could achieve the requirement of Department of Energy Business (DOEB), Ministry of Energy Thailand diesel specification both physical and chemical properties.