Okla. Stat. tit. 17, § 17-347

A. No person shall sell or offer for sale motor fuel from a

motor fuel dispenser supplied by a storage tank into which motor

fuel that contains a mixture of at least one percent (1%) by volume

of ethanol or methanol has been delivered within the sixty-day

period preceding the date of sale or offer of sale unless the person

prominently displays on the dispenser from which the mixture is sold

a label that complies with subsection B of this section.

Oklahoma Statutes - Title 17. Corporation Commission Page 266

B. 1. A label as required in subsection A of this section

shall:

a. be displayed on each face of the motor fuel dispenser

on which the price of the motor fuel mixture sold from

the dispenser is displayed,

b. state “Contains Ethanol” or “Contains Methanol”, as

applicable,

c. appear in contrasting colors with block letters at

least one-half (1/2) inch high and one-fourth (1/4)

inch wide, and

d. be displayed in a clear, conspicuous and prominent

manner, visible to customers using either side of the

dispenser.

2. If the motor fuel contains fifteen percent (15%) ethanol, a

pump label as required in subsection A of this section shall meet

federal E15 labeling requirements as ruled by the Environmental

Protection Agency pursuant to 40 CFR Part 1090.1510 as it is written

on February 1, 2023.

C. If a motor fuel dispenser is supplied by a storage tank into

which motor fuel containing at least ten percent (10%) ethanol by

volume or at least five percent (5%) methanol by volume is delivered

in the sixty-day period preceding the date of the sale or offer of

sale, the sign as required in subsection A of this section shall

also state the percentage of ethanol or methanol by volume, to the

nearest whole percent, of the motor fuel having the highest

percentage of ethanol or methanol delivered into that storage tank

during that period.

D. On request by a motor fuel user, a person selling or

offering for sale motor fuel from a motor fuel dispenser shall

reveal:

1. The percentage of ethanol contained in the motor fuel being

sold;

2. The percentage of methanol contained in the motor fuel being

sold; and

3. If the motor fuel contains methanol, the types and

percentages of associated cosolvents contained in the motor fuel

being sold.

E. The provisions of this section shall not prohibit the

posting of any other alcohol or additive information. Other alcohol

or additive information and any relevant posting shall be subject to

regulation by the Corporation Commission.

F. The Corporation Commission shall promulgate rules as

necessary to implement the provisions of this section.