Diesel fuel, petroleum gas or diesel fuel is used as fuel for diesel engines and thermal equipment. Its range of hydrocarbons is between C14-C20 and even C25 with the boiling point of 385-250 ° C. Petroleum / OIL is mainly composed of three groups of paraffin, naphthenic and aromatic, with one flash point minimum of 54 ° C and a maximum dropping point of 0 ° C.

Its density is 820-860 kg / m3 at 15.6 ° C. The most important characteristic is the cetane number, which should be above 50 for the smooth and quiet motor to run.