N.Y. Comp. Codes R. & Regs. tit. 1, § 224.9 – Automotive fuel ratings, certification and posting.

(a) Refiners and producers shall comply with the requirements in 16 CFR sections 306.5 through 306.7.
(b) Distributors shall comply with the requirements in 16 CFR sections 306.8 and 306.9.
(c) Retailers shall comply with the requirements in 16 CFR sections 306.10 through 306.12.
1. (1) The following terms used on dispensers and street signs when describing gasoline or gasoline-alcohol blends shall meet the following requirements:
  1. (i) Regular shall mean 87 octane.
  2. (ii) Mid-grade, plus, and extra shall mean 88 octane or greater.
  3. (iii) Premium, super, and ultra shall mean 91 octane or greater.
  4. (iv) Ethanol free gasoline containing less than one percent ethanol by volume shall be labeled “ethanol free”, “non-ethanol”, “no ethanol” or similar term.
2. (2) United States Environmental Protection Agency (EPA) labeling requirements. Retailers and wholesale purchaser consumers of gasoline shall comply with the EPA pump labeling requirements for gasoline containing ethanol in an amount greater than 10 percent by volume up to 15 percent by volume (E15) as set forth in 40 CFR section 80.1501.