Glossary: definitions of petroleum products and other terms

Petroleum Supply Monthly, June, 2004

   No. 1 Distillate. A light petroleum distillate that can be
   used as either a diesel fuel or a fuel oil.

     No. 1 Diesel Fuel. A light distillate fuel oil that has
     distillation temperatures of 550 degrees Fahrenheit at
     the 90-percent point and meets the specifications defined
     in ASTM Specification D 975. It is used in
     high-speed diesel engines generally operated under
     frequent speed and load changes, such as those in city
     buses and similar vehicles.

     No. 1 Fuel Oil. A light distillate fuel oil that has
     distillation temperatures of 400 degrees Fahrenheit at
     the 10-percent recovery point and 550 degrees Fahrenheit
     at the 90-percent point and meets the specifications
     defined in ASTM Specification D 396. It is used
     primarily as fuel for portable outdoor stoves and portable
     outdoor heaters.

   No. 2 Distillate. A petroleum distillate that can be used
   as either a diesel fuel or a fuel oil.

     No. 2 Diesel Fuel. A fuel that has distillation temperatures
     of 500 degrees Fahrenheit at the 10-percent
     recovery point and 640 degrees Fahrenheit at the 90-percent
     recovery point and meets the specifications
     defined in ASTM Specification D 975. It is used in
     high speed diesel engines that are generally operated
     under uniform speed and load conditions, such as
     those in railroad locomotives, trucks, and automobiles.

       Low Sulfur No. 2 Diesel Fuel. No. 2 diesel fuel that
       has a sulfur level no higher than 0.05 percent by
       weight. It is used primarily in motor vehicle diesel
       engines for on-highway use.

       High Sulfur No. 2 Diesel Fuel. No. 2 diesel fuel
       that has a sulfur level above 0.05 percent by weight.

     No. 2 Fuel Oil (Heating Oil). A distillate fuel oil that
     has distillation temperatures of 400 degrees Fahrenheit
     at the 10-percent recovery point and 640 degrees
     Fahrenheit at the 90-percent recovery point and meets
     the specifications defined in ASTM Specification D
     396. It is used in atomizing type burners for domestic
     heating or for moderate capacity commercial/industrial
     burner units.

   No. 4 Fuel. A distillate fuel oil made by blending distillate
   fuel oil and residual fuel oil stocks. It conforms
   with ASTM Specification D 396 or Federal Specification
   VV-F-815C and is used extensively in industrial
   plants and in commercial burner installations that are
   not equipped with preheating facilities. It also includes
   No. 4 diesel fuel used for low- and medium-speed diesel
   engines and conforms to ASTM Specification D 975.

   No. 4 Diesel Fuel. See No. 4 Fuel.

   No. 4 Fuel Oil. See No. 4 Fuel.

Electricity (Purchased). Electricity purchased for refinery operations that is not produced within the refinery complex.

Ending Stocks. Primary stocks of crude oil and petroleum products held in storage as of 12 midnight on the last day of the month. Primary stocks include crude oil or petroleum products held in storage at (or in) leases, refineries, natural gas processing plants, pipelines, tank farms, and bulk terminals that can store at least 50,000 barrels of petroleum products or that can receive petroleum products by tanker, barge, or pipeline. Crude oil that is in-transit by water from Alaska, or that is stored on Federal leases or in the Strategic Petroleum Reserve is included. Primary Stocks exclude stocks of foreign origin that are held in bonded warehouse storage.