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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.

Engine lubrication in the global automotive industry has many challenges in the world today. One of them is the pursuit of fuel economy which has resulted in the growing popularity of lower viscosity engine oils. However, engine wear protection of low viscosity oils is not as robust as for higher viscosity grade oils. Due to this, low viscosity grade engine oils, such as SAE 0W-20, are not common in tropical climates, though they could provide the added benefit for fuel economy. To address these two seemingly discordant performance characteristics, PTT has developed a new API SN, SAE 0W-20 engine oil with a novel viscosity modifier and conducted a field trial with extended oil drain intervals to gain a better understanding of its performance in tropical climates, especially its wear protection performance in passenger cars.