Gas Oil is the term given to middle distillate streams, generally used as a fuel in heating and air conditioning systems. In refining terms, gas oil comes between fuel oil and the lighter products such as naphtha and gasoline. Its broader definition covers the oil products diesel and jet fuel. Gas Oil can be used as a feedstock in Petrochemical steam cracking, producing ethylene alongside a wide range of co-products.
Gasoline is a relatively light distillate stream produced as one of the principle products from a crude oil refinery. Gasoline specifications vary from region to region with variation in both performance and environmental characteristics. These specifications include octane level, vapour pressure, as well as a wide variety of component limitations such as sulphur, lead, benzene and olefin limitations.