SECTION 165:15-7-2. Gasoline

(a)   Characteristics. Gasoline must be essentially free of undissolved water, sediment, and suspended matter, and must be suitable for use as a fuel in a spark ignition, internal combustion engine. It must be clear and bright at the ambient temperature or 70°F, whichever is higher.

(b)   The minimum value for (R+M)/2 for unleaded motor fuel. The minimum value for (R+M)/2 stated in this subsection applies to all unleaded fuel sold in the State of Oklahoma.

(1)   The measuring devices must be labeled as follows and the motor fuel dispensed must meet or exceed the stated value corresponding to the stated grade. At a minimum, labeling of measuring devices for unleaded product grade must state as follows:

(A)   West of 99 degrees west longitude, 86

(B)   87

(C)   88

(D)   89

(E)   90

(F)   91

(G)   92

(H)   93

(I)   94

(2)   In addition to the labeling requirements of (1), labels may read as follows:

(A)   East of 99 degrees west longitude

(i)   Unlead or Unleaded or Unleaded Regular: 87 or 88

(ii)   Unleaded Plus or Mid-Grade Unleaded or Mid-Grade UL: 89 or 90

(iii)   Premium Unleaded or Super Unleaded or Premium UL or Super UL: 91 and above.

(B)   West of 99 degrees west longitude

(i)   Unlead or Unleaded or Unleaded Regular: 86 or 87

(ii)   Unleaded Plus or Mid-Grade Unleaded or Mid-Grade UL: 88 or 89

(iii)   Premium Unleaded or Super Unleaded or Premium UL or Super UL: 90 and above.

(3)   Any labeling of measuring devices for grade(s) of products other than those described in (1) and (2) above require an application to the Director of the Petroleum Storage Tank Division.

(c)   Gum content. The gum content of gasoline must not exceed 5 milligrams per 100 milliliters.

(d)   Additives. Ethanol, MtBE or TAME added to gasoline as a component must not exceed concentrations permitted by the United States Environmental Protection Agency.

(e)   Other. Any other type, grade, or mixture of gasoline must be certified pursuant to the provisions of Subchapter 5 of this Chapter.

[Source: Amended at 9 Ok Reg 2329, eff 6-25-92; Amended at 10 Ok Reg 4245, eff 8-12-93; Amended at 13 Ok Reg 2405, eff 7-1-96; Amended at 18 Ok Reg 1052, eff 5-11-01; Amended at 32 Ok Reg 768, eff 8-27-15]