Analytical data for 1,797 samples of motor gasoline were collected from service stations throughout the country and were analyzed in the laboratories of various refiners, motor manufacturers, chemical companies, and research institutes. The data were submitted to the National Institute for Petroleum and Energy Research, Bartlesville, Oklahoma for study, necessary calculations, and compilation under a cooperative agreement between the National Institute for Petroleum and Energy Research (NIPER) and the American Petroleum Institute (API). The samples represent the products of 60 companies, large and small, which manufacture and supply gasoline. These data are tabulated by groups according to brands (unlabeled) and grades for 17 marketing districts into which the country is divided. A map included in this report shows marketing areas, districts, and sampling locations. The report also includes charts indicating the trends of selected properties of motor fuels since 1959. Twelve octane distribution percent charts for areas 1, 2, 3, and 4 for unleaded antiknock index (R+M)/2 below 90.0, unleaded antiknock index (R+M)/2 90.0 and above, and leaded antiknock index (R+M)/2 below 93.0 grades of gasoline are presented in this report. The antiknock (octane) index (R+M)/2 averages of gasoline sold in this country were 87.4 for unleaded below 90.0, 91.6 for unleaded 90.0 and above, and 89.1 for leaded below 93.0 grades of gasoline. Only two samples were reported as 93.0 for leaded gasolines with an antiknock index (R+M)/2 93.0 and above.

  • Corporate Authors:

    National Institute for Petroleum and Energy Res

    P.O. Box 2128
    Bartlesville, OK  United States  74005
  • Authors:
    • Shelton, E M
    • Dickson, C L
  • Publication Date: 1985-6

Media Info

  • Features: Figures; Tables;
  • Pagination: 59 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00451817
  • Record Type: Publication
  • Source Agency: National Highway Traffic Safety Administration
  • Report/Paper Numbers: NIPER-140 PPS, HS-039 094
  • Files: HSL, TRIS, USDOT
  • Created Date: Dec 31 1985 12:00AM