This product is obtained from low viscosity reduction products and contains C30-C50 hydrocarbons. The fuel oil has aromatics, paraffinics and hydrocarbons with asphaltenes. Its use in large industrial facilities, such as power plants, as well as fuels and fuel fuels. The most important feature of this product is its high viscosity, based on the difference in viscosity, this product is divided into four types of 180, 230, 280, 380 petroleum with its own characteristics.