OAR 603-027-0420
Standard Fuel Specifications


(1)

Gasoline and Gasoline-Oxygenate Blends, as defined in this regulation, shall meet the following requirements:

(a)

The ASTM D 4814, “Standard Specification for Automotive Spark-Ignition Engine Fuel,” except that volatility standards for unleaded gasoline blended with ethanol shall not be more restrictive than those adopted under the rules, regulations, and Clean Air Act waivers of the U.S. Environmental Protection Agency (which includes those promulgated by Oregon and Federally approved State Implementation Plans (SIP’s)). Gasoline blended with ethanol shall be blended under any of the following three options:

(A)

The base gasoline used in such blends shall meet the requirements of ASTM D 4814; or

(B)

The blend shall meet the requirements of ASTM D 4814; or

(C)

The base gasoline used in such blends shall meet all the requirements of ASTM D 4814 except distillation, and the blend shall meet the distillation requirements of the ASTM D 4814 specification.

(b)

Blends of gasoline and ethanol shall not exceed the ASTM D 4814 vapor pressure standard by more than 1.0 psi.

(c)

Minimum Antiknock Index (AKI). The AKI shall not be less than the AKI posted on the product dispenser or as certified on the invoice, bill of lading, shipping paper, or other documentation.

(d)

Minimum Motor Octane Number. The minimum motor octane number must not be less than 82 for gasoline with an AKI of 87 or greater.

(e)

Lead Substitute Gasoline. Gasoline and gasoline-oxygenate blends sold as “lead substitute” gasoline shall contain a lead substitute additive which provides a level of protection against exhaust valve seat recession which is equivalent to the level of protection provided by a gasoline containing at least 0.026 gram of lead per liter (0.10 g per U.S. gal).

(2)

Ethanol intended for blending with gasoline shall meet the requirements of ASTM D 4806, “Standard Specification for Denatured Fuel Ethanol for Blending with Gasolines for Use as Automotive Spark-Ignition Engine Fuel.”

(3)

Gasoline-Ethanol Blends Required

(a)

Consistent with ORS 646.912, the Oregon Department of Agriculture shall study and monitor ethanol fuel production, use, and sales in Oregon.

(b)

Except as provided in OAR 603-027-0420 (Standard Fuel Specifications)(3)(c), all retail dealers, nonretail dealers, or wholesale dealers may only sell or offer for sale gasoline that contains ten percent ethanol by volume.

(c)

A retail dealer, nonretail dealer, or wholesale dealer may sell or offer for sale gasoline that is not blended with ethanol if the gasoline;

(A)

Has an octane rating, as defined in ORS 646.945 (Definitions for ORS 646.947 to 646.963), of 91 or above, or if it is for use in;

(B)

An aircraft;
(i)
With a supplemental type certificate approved by the Federal Aviation Administration that allows the aircraft to use gasoline that is intended for use in motor vehicles, or
(ii)
Issued a type certificate by an aircraft engine manufacturer that allows the aircraft to use gasoline that is intended for use in motor vehicles;

(C)

An aircraft that has been issued an experimental certificate, described in 14 C.F.R. 21.191, by the Federal Aviation Administration and that is required by the manufacturer’s specifications to use gasoline that is intended for use in motor vehicles;

(D)

A light-sport aircraft, as defined in 14 C.F.R. 1.1, that is required by the manufacturer’s specifications to use gasoline that is intended for use in motor vehicles;

(E)

A vintage aircraft, as defined by the Oregon Department of Aviation by rule, that is required by the manufacturer’s specifications to use gasoline that is intended for use in motor vehicles;

(F)

An antique vehicle, as defined in ORS 801.125 (“Antique vehicle”);

(G)

A Class I all-terrain vehicle, as defined in ORS 801.190 (“Class I all-terrain vehicle”);

(H)

A Class III all-terrain vehicle, as defined in ORS 801.194 (“Class III all-terrain vehicle” and “Class IV all-terrain vehicle”);

(I)

A racing activity vehicle, as defined in ORS 801.404 (“Racing activity vehicle”);

(J)

A snowmobile, as defined in ORS 801.490 (“Snowmobile”);

(K)

Tools, including but not limited to lawn mowers, leaf blowers, and chain saws; or

(L)

A watercraft.

(d)

Gasoline-ethanol blends shall contain not less than 9.2 percent by volume of agriculturally derived ethanol, exclusive of denaturants and permitted contaminates, that complies with

(A)

OAR 603-027-0420 (Standard Fuel Specifications)(2) Ethanol ASTM D 4806 standards,

(B)

Denatured as specified in 27 C.F.R parts 20 and 21, and

(C)

Complies with the volatility requirements specified in 40 C.F.R. part 80.

(e)

The ethanol shall be derived from agricultural product, woody waste or residue.

(f)

The gasoline and gasoline-ethanol blends shall comply with OAR 603-027-0420 (Standard Fuel Specifications)(1).

(g)

It is prohibited to blend with casinghead gasoline, absorption gasoline, drip gasoline, or natural gasoline after the gasoline has been sold, transferred, or otherwise removed from a refinery or terminal.

(4)

Gasoline Additive Restrictions.

(a)

Effective November 1, 2009, a wholesale dealer, retail dealer, or nonretail dealer may not sell or offer to sell any gasoline blended or mixed with:

(A)

Ethanol unless the blend or mixture meets the specifications or registration requirements established by the United States Environmental Protection Agency pursuant to section 211 of the Clean Air Act, 42 U.S.C. section 7545 and 40 C.F.R. Part 79, and the ethanol complies with ASTM International specification ASTM D 4806;

(B)

Methyl tertiary butyl ether in concentrations that exceed 0.15 percent by volume; or

(C)

A total of all of the following oxygenates that exceeds one-tenth of one percent, by weight, of;
(i)
Diisopropyl ether,
(ii)
Ethyl tert-butyl ether,
(iii)
Iso-butanol,
(iv)
Iso-propanol,
(v)
N-butanol,
(vi)
N-propanol,
(vii)
Sec-butanol,
(viii)
Tert-amyl methyl ether,
(ix)
Tert-butanol,
(x)
Tert-pentanol or tert-amyl alcohol, and
(xi)
Any other additive that has not been approved by the California Air Resources Board or the United States Environmental Protection Agency.

(b)

Nothing in this section shall prohibit transshipment through this state, or storage incident to the transshipment, of gasoline that contains methyl tertiary butyl ether in concentrations that exceed 0.15 percent by volume or any of the oxygenates listed in OAR 603-027-0420 (Standard Fuel Specifications)(4)(a)(C), provided,

(A)

The gasoline is used or disposed of outside of this state; and

(B)

The gasoline is segregated from gasoline intended for use within this state.

(c)

Notwithstanding the additives in OAR 603-027-0420 (Standard Fuel Specifications)(4)(a), a person may sell, supply, or offer to sell or supply gasoline in this state that contains any oxygenate other than ethanol, if the California Air Resources Board (CARB), California Environmental Policy Council (CEPC), or the United States Protection Agency (U.S. EPA) allow use of the oxygenate.

(5)

Diesel Fuel shall meet the requirements of ASTM D 975, “Standard Specification for Diesel Fuel Oils.”

(6)

Winter or Winterized Diesel Fuel shall meet the requirements of ASTM D 975, “Standard Specification for Diesel Fuel Oils” and have a cold flow performance measurement which meets the ASTM D 975 tenth percentile minimum ambient air temperature charts and maps by either ASTM Standard Test Method D 2500 (Cloud Point) or ASTM Standard Test Method D 4539 (Low Temperature Flow Test, LTFT). Winter or winterized diesel (low temperature operability) is only applicable October 1 - March 31 of each year.

(7)

Premium Diesel Fuel — All diesel fuels identified on retail and nonretail dispensers, bills of lading, invoices, shipping papers, or other documentation with terms such as premium, super, supreme, plus, or premier shall meet the requirements of ASTM D 975, “Standard Specification for Diesel Fuel Oils” and must conform to the following requirements:

(a)

Cetane Number — A minimum cetane number of 47.0 as determined by ASTM Standard Test Method D 613;

(b)

Low Temperature Operability — A cold flow performance measurement which meets the ASTM D 975 tenth percentile minimum ambient air temperature charts and maps by either ASTM Standard Test Method D 2500 (Cloud Point) or ASTM Standard Test Method D 4539 (Low Temperature Flow Test, LTFT). Low temperature operability is only applicable October 1 - March 31 of each year;

(c)

Thermal Stability — A minimum reflectance measurement of 80 percent as determined by ASTM Standard Test Method D 6468 (180 minutes, 150 0C);

(d)

Lubricity — A maximum wear scar diameter of 520 microns as determined by ASTM D 6079. If a single test of more than 560 microns is determined, a second test shall be conducted. If the average of the two tests is more than 560 microns, the sample does not conform to the requirements of this part.

(8)

Biodiesel; B100 Biodiesel and Biodiesel intended for blending with diesel fuel must,

(a)

Meet the requirements of ASTM D 6751, “Standard Specification for Biodiesel Fuel (B100) Blend Stock for Distillate Fuels”;

(b)

Be analyzed and issued a Certificate of Analysis for each batch or production lot produced in or imported into Oregon prior to blending, sale, or offer for sale in Oregon. The Certificates of Analysis expire 45 days following the date the biodiesel sample was obtained.

(c)

Biodiesel must be analyzed for and comply with the visual appearance test (ASTM D 4176) upon its first receipt at a wholesale facility and prior to commingling with existing product.

(d)

Prior to blending, sale, or offer for sale in Oregon, biodiesel must be analyzed and the Certificate of Analysis issued by:

(A)

An accredited motor fuel laboratory, or

(B)

A non-accredited motor fuel laboratory that meets all of the following requirements;
(i)
The laboratory facilities must house and allow proper operation of all required equipment in accordance with the applicable test procedures,
(ii)
The laboratory must use personnel trained to perform and analyze ASTM International D 6751 biodiesel fuel tests and other required tests,
(iii)
The laboratory must use testing equipment that has been calibrated or verified to meet the requirements of each ASTM International test procedure used,
(iv)
The laboratory must participate in an ASTM International proficiency program or similar national proficiency program for at least three times per year with appropriate results, and
(v)
The laboratory must maintain current documentation of personnel qualifications, equipment verification, and proficiency results for at least one year. These records shall be available for inspection and reproduction upon request by the Director.

(9)

Biodiesel Blends;

(a)

Biodiesel blends through B5 must meet the requirements of ASTM D 975 Standard Specification for Diesel Fuel Oils.

(b)

Biodiesel blends of B6 through B20 must meet the requirements of ASTM D 7467, Standard Specification for Diesel Fuel Oil, Biodiesel Blend (B6-B20).

(c)

Blends of biodiesel and diesel fuels greater than B20 must meet the following requirements:

(A)

The base diesel fuel must meet the requirements of ASTM D 975, Standard Specification for Diesel Fuel Oils; and

(B)

The biodiesel blend stock must meet:
(i)
The requirements of ASTM D 6751, Standard Specification for Biodiesel Fuel (B100) Blend Stock for Distillate Fuels, and
(ii)
The requirements in OAR 603-027-0420 (Standard Fuel Specifications)(8).

(d)

Exception; Biodiesel may be blended with diesel fuel whose sulfur, lubricity, or aromatic levels are outside specification ASTM D 975, Standard Specification for Diesel Fuel Oils, grades 1-D, or 2-D provided the finished mixture meets pertinent national and local specifications and requirements for these properties.

(10)

Biomass-Based Diesel, also referred to as Other Renewable Diesel and Renewable Diesel, must meet the registration requirements for fuels and fuel additives established by the U.S. Environmental Protection Agency under the 2007 42 U.S.C. 7545, comply with ASTM International D975 Standard Specification for Diesel Fuel Oils or other applicable ASTM product specifications, can be used as a finished fuel or fuel blending component, and designated “100% Biomass-Based Diesel”.

(11)

Biomass-Based Diesel Blends must comply with ASTM D975 Standard Specification for Diesel Fuel Oils.

(12)

Biodiesel Blends, Biomass-Based Blends, or a Combination of Biodiesel and Biomass-Based Diesel Blends Required.

(a)

Except as provided in subsection (d) of this section, a retail dealer, nonretail dealer, or wholesale dealer may only sell or offer for sale diesel fuel in Oregon containing;
(i)
At least five percent biodiesel by volume, or
(ii)
As of January 2, 2012, biomass-based diesel with at least five percent renewable component by volume, or
(iii)
Five percent or less biodiesel by volume and five percent or less biomass-based diesel by volume provided the combined total of biodiesel and biomass-based diesel is at least five percent by volume.

(b)

Biodiesel blends and biomass-based diesel blends shall contain the volume percent stated to the nearest;

(A)

1 volume percent for blends through 5 volume percent, and

(B)

2 volume percent for blends greater than 5 volume percent through 20 volume percent.

(c)

Diesel fuel containing more than five percent biodiesel by volume or biomass-based diesel with more than five percent renewable component by volume must be labeled as required in OAR 603-027-0430 (Classification and Method of Sale of Petroleum Products).

(d)

Exemption. The minimum biodiesel fuel content requirements in OAR 603-027-0420 (Standard Fuel Specifications) do not apply to diesel fuel:

(A)

Sold or offered for sale for use by railroad locomotives, marine engines, or home heating; or

(B)

That otherwise meets the requirements in OAR 603-027-0420 (Standard Fuel Specifications) but to which there have been added substances to prevent congealing or gelling of diesel fuel containing biodiesel or biomass-based diesel. This exception applies only to diesel fuel sold or offered for sale during the period from October 1 of any year to February 28 of the following year.

(13)

Aviation Gasoline shall meet the requirements of ASTM D 910, “Standard Specification for Aviation Gasoline.”

(14)

E85 Fuel Ethanol shall meet the requirements of ASTM D 5798, “Standard Specification for Fuel Ethanol (Ed75-Ed85) for Automotive Spark-Ignition Engines.”

(15)

M85 Fuel Methanol shall meet the requirements of ASTM D 5797, “Standard Specification for Fuel Methanol (M70-M85) for Automotive Spark-Ignition Engines.”
[Publications: Publications referenced are available from the agency.]

Source: Rule 603-027-0420 — Standard Fuel Specifications, https://secure.­sos.­state.­or.­us/oard/view.­action?ruleNumber=603-027-0420.

Last Updated

Jun. 24, 2021

Rule 603-027-0420’s source at or​.us