Utah Administrative Code
Topic - Agriculture and Food
Title R70 - Regulatory Services
Rule R70-940 - Standards and Testing of Motor Fuel
Section R70-940-2 - Standards

Universal Citation: UT Admin Code R 70-940-2

Current through Bulletin 2024-06, March 15, 2024

(1) Gasoline and gasoline-ethanol blends shall have a minimum Anti-Knock Index (AKI) of 85.

(2) The Department adopts by reference motor fuel regulations outlined in the 2017 version of NIST Handbook 130; "Uniform Laws and Regulations in the area of legal metrology and engine fuel quality", Chapter I V, Part G, "Uniform Engine Fuels and Automotive Lubricants Regulation" with the following exceptions:

(a) Section 2.1.1, the Department adopts ASTM specification D4814-17, "Standard Specification for Automotive Spark-Ignition Engine Fuel".

(b) Section 2.1.2, Gasoline-Ethanol blends shall not exceed ASTM D4814-17 Table 1 vapor pressure limits by more than:
(i) 1.0 psi, when gasoline-ethanol blends contain nine to ten volume percent ethanol from June 1st through Sept 15th.

(ii) 1.0 psi, when gasoline-ethanol blends contain one up to and including fifteen volume percent ethanol for volatility classes A, B, C, and D from September 16th through May 31st.

(iii) 0.5 psi, for gasoline-ethanol blends containing one up to and including fifteen volume percent ethanol for volatility class E from September 16th through May 31st.

(iv) Vapor pressure exceptions will remain in effect until ASTM incorporates changes to the vapor pressure maximums for gasoline-ethanol blends.

(c) Section 2.2, the Department adopts by reference ASTM D975-17 "Standard Specification for Diesel Fuel Oils".

(d) Section 4.4.2, If the standard color code is adopted, no color key posting is required

Disclaimer: These regulations may not be the most recent version. Utah may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.