FRED Graph

Source: U.S. Energy Information Administration  

Release: Gasoline and Diesel Fuel Update  

Units:  Dollars per Gallon, Not Seasonally Adjusted

Frequency:  Monthly, End of Period

Weighted average based on sampling of approximately 350 retail outlets, as reported for the week. See (http://www.eia.doe.gov/oil_gas/petroleum/data_publications/wrgp/mogas_home_page.html) for further definitions.

Source: U.S. Energy Information Administration  

Release: Gasoline and Diesel Fuel Update  

Units:  Dollars per Gallon, Not Seasonally Adjusted

Frequency:  Monthly, End of Period

Weighted average based on sampling of approximately 900 retail outlets, 8:00AM Monday. The price represents self-service unless only full-service is available and includes all taxes. See (http://www.eia.doe.gov/oil_gas/petroleum/data_publications/wrgp/mogas_home_page.html) for further definitions. Regular Gasoline has an antiknock index (average of the research octane rating and the motor octane number) greater than or equal to 85 and less than 88. Octane requirements may vary by altitude.

Source: U.S. Energy Information Administration  

Release: Spot Prices  

Units:  Dollars per Gallon, Not Seasonally Adjusted

Frequency:  Monthly

Definitions, Sources and Explanatory Notes:
http://www.eia.doe.gov/dnav/pet/TblDefs/pet_pri_spt_tbldef2.asp

Source: Federal Reserve Bank of St. Louis  

Release: Spliced Oil Price

Units:  Dollars per Barrel, Not Seasonally Adjusted

Frequency:  Monthly

This series was created by the Federal Reserve Bank of St. Louis to expand the history of the monthly West Texas Intermediate oil price series in FRED. We simply combined these two FRED series: https://fred.stlouisfed.org/series/OILPRICE and https://fred.stlouisfed.org/series/MCOILWTICO. From January 1946 through July 2013, the series used is OILPRICE. From August 2013 to present, the series used is MCOILWTICO.