What is petroleum?
Petroleum is defined as crude oil or any fraction thereof that is liquid at standard conditions of temperature and pressure. The term includes, but is not limited to, petroleum and petroleum-based substances comprised of a complex blend of hydrocarbons derived from crude oil through processes of separation, conversion, upgrading and finishing, such as motor fuels, jet fuels, distillate fuel oils, residual fuel oils, lubricants, petroleum solvents and used oils.