N.Y. Comp. Codes R. & Regs. Tit. 1 § 224.3 - Standards for automotive fuel

The following products when sold, offered for sale or when used in this State shall meet the following requirements:

(a) Automotive gasoline.

Automotive gasoline. All automotive gasoline shall meet the requirements in ASTM D4814-24a, except as noted below.

(1) Vapor pressure. Vapor pressure standards set forth in 6 NYCRR Subpart 225-3, or exceptions granted thereto by the Commissioner of Environmental Conservation, shall supersede those in this section.
(2) Gasoline-alcohol blends.
(i) Gasoline-ethanol blends greater than 15 percent by volume and less than 51 percent by volume ethanol are prohibited. Only gasoline-butanol blends may contain 16 percent alcohol by volume.
(ii) When methanol is blended with gasoline in quantities greater than three-tenths (0.3) percent by volume, the finished blend shall contain at least an equal amount of butanol or higher molecular weight alcohol, or other approved co-solvent. The maximum methanol content of any gasoline shall not exceed five percent by volume.
(3) Motor octane number. All unleaded gasoline with minimum (R + M)/2 octane ratings of 87 or higher shall have minimum motor octane number of 82. Unleaded gasolines with minimum (R + M)/2 octane ratings less than 87 shall have a minimum motor octane number of 81.5.
(4) Testing for octane rating. To determine the automotive fuel rating (octane rating) for gasoline in this Part, add the research octane number from test method ASTM D2699-24a and the motor octane number from test method ASTM D2700-24b and divide by two as explained in ASTM D4814-24a.
(5) Leaded gasoline.

All automotive gasoline designated as "leaded" shall contain a minimum of 0.05 gram per gallon and a maximum of 0.1 gram per gallon of lead, or a minimum of 0.005 gram per gallon of phosphorus.

(b) Diesel fuel.

All diesel fuel shall meet the requirements in ASTM D975-24a.

(c) Kerosene.

All kerosene shall meet the requirements in ASTM D3699-19.

(d) Denatured fuel ethanol intended for blending with gasoline shall meet the requirements in ASTM D4806-21a.
(e) Ethanol flex fuels.

All blends of ethanol flex fuel shall meet the following requirements:

(1) Ethanol flex fuels containing 51 to 83 percent ethanol by volume shall meet the requirements in ASTM D5798-21.
(2) Ethanol flex fuels containing more than 10 percent but not greater than 15 percent ethanol by volume shall meet the requirements in ASTM D4814-24a.
(f) Butanol.

All butanol intended for blending with gasoline shall meet the requirements in ASTM D7862-21.

(g) Butanol blends.

Blends of butanol and gasoline that contain less than or equal to 16 percent butanol by volume, shall meet the requirements in ASTM D4814-24a.

(h) Biodiesel.

All biodiesel intended for blending with diesel fuel shall meet the requirements in ASTM D6751-24.

(i) Biodiesel blends.

All blends of biodiesel and diesel fuel shall meet the following requirements:

(1) Blends that contain 5 percent or less biodiesel by volume shall meet the requirements in ASTM D975-24a.
(2) Blends that contain more than 5 percent biodiesel by volume but 20 percent or less biodiesel by volume shall meet the requirements in ASTM D7467-23.
(3) When blends that contain more than 20 percent biodiesel are offered for sale, the diesel fuel used in the blend shall meet ASTM D975-24a and the biodiesel blend stock shall meet ASTM D6751-24.

Notes

N.Y. Comp. Codes R. & Regs. Tit. 1 § 224.3
Amended New York State Register November 20, 2019/Volume XLI, Issue 47, eff. 11/20/2019 Amended New York State Register April 23, 2025/Volume XLVII, Issue 16, eff. 4/23/2025

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