The diesel engine is now fully established in a variety of applications on land and in marine use. On land, it serves to power trains, buses, trucks, and automobiles, and to run construction, petroleum drilling, agricultural, and other off-road equipment. At sea, it serves both to provide main propulsion power and to run auxiliaries (RAND , 2003). The major parameters which control the diesel quality and ranges of usage are the cetane number, aromatic content, density, sulfur content, distillation profile, viscosity, cloud and pour points, and flash point (JONES , PUJADÓ , 2006). Some of these parameters or properties are interconnected, for example, the saturation