A middle distillate and form of heating oil used primarily in internal combustion engines such as vehicles and trucks. One of the most actively traded oil products, gasoil is the underlying in a key International Petroleum contracts In refining terms, gasoil comes between fuel oil and the lighter products such as naphtha and gasoline. In its broader definition, it covers the oil products used for diesel automotive fuel and jet fuel. The estimations show that the demand for gasoil will reach to 30 mb/d at the end of 2020.