Of the 19 total refineries in Canada, 16 are able to extract a full range of petroleum products, while others On average, U.S. refineries produce, from a 42-gallon barrel of crude oil, about 19 to 20 gallons of motor gasoline, 11 to 12 gallons of distillate fuel, most of which is sold as diesel fuel, and 4 gallons of jet fuel. More than a dozen other petroleum products are also produced in refineries. Petroleum refineries produce liquids the petrochemical industry uses to make a variety of chemicals and plastics. The oil refining process is the central activity of downstream oil and gas companies. In the refining process, crude oil is refined to produce different petroleum products like gasoline, diesel, and jet fuel. For the conversion to take place, crude oil is heated and introduced into the distillation tower.