Agriculture and Rural Development - Laboratory Division - Regulation No. 564. Automotive Gasoline Purity, Additives, And Grading


Published: 1987

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DEPARTMENT OF AGRICULTURE

LABORATORY DIVISION

REGULATION NO. 564. AUTOMOTIVE MOTOR FUEL PURITY, ADDITIVES,

AND GRADING

(By authority conferred on the director of the department of agriculture by section 3 of

1984 PA 44, MCL 290.643)

R 285.564.1 Definitions.

Rule 1. (1) As used in these rules:

(a) "Act" means 1984 PA 44, MCL 290.641.

(b) "Antiknock index (AKI)" means (RON + MON)/2.

(c) "ASTM" means the scientific and technical organization founded for the

development of standards and located at 100 Barr Harbor Drive, W.

Conshohocken, PA 19428-2959.

(d) "Blender" means a person who as an individual or through his or her agent adds

an oxygenate to gasoline.

(e) "Maximum phase separation temperature" means the temperature of a gasoline

containing alcohol which retains water in solution or in a stable suspension.

(f) "Motor octane number (MON)" means a knock characteristic of automotive gasoline

determined by use of standard procedures on a motor engine.

(g) "Research octane number (RON)" means a knock characteristic of automotive

gasoline determined by use of standard procedures on a research engine.

(2) The terms defined in the act have the same meanings when used in these rules.

History: 1987 AACS; 2003 AACS; 2009 AACS.

R 285.564.2 Permissible oxygen content in gasoline; gasoline clarity.

Rule 2. (1) The calculated oxygen content permitted in any gasoline sample shall

not exceed 3.7% by weight. The percentage of oxygen by weight shall be calculated on

the basis of the oxygenate added per 1% volume, without regard to the actual gravity

of the finished gasoline, as listed in the following table:

Table 1

Oxygenate added Percentage by Weight of oxygen per 1% volume oxygenate

Methanol .53%

Ethanol .37%

Tertiary butyl alcohol .23%

The following are examples of calculated oxygen equivalents:

(a) Gasoline having 10% by volume ethanol. Oxygen by weight: 10 x .37 =3.7%.

(b) Gasoline having 4 1/2% by volume methanol and 4 1/2% by volume tertiary

butyl alcohol. Oxygen by weight: 4.5 x .53 + 4.5 x .23 = 3.4%.

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(c) The department shall provide oxygen equivalents for oxygenates not listed in table

1 upon request, which shall be based upon gasoline with a specific gravity of .7412 (6.17

pounds per gallon) at 60 degrees

Fahrenheit.

(d) There shall not be intentional addition of methyl tertiary butyl ether (MTBE) to the

gasoline.

(2) Gasoline shall be visually free of undissolved water, sediment, and suspended

matter. It shall be clear and bright at the ambient temperature or 70 degrees Fahrenheit

(21 degrees Celsius), whichever is higher.

(3) The finished fuel shall be free of an adulterant or contaminant that may render the

fuel unacceptable for its commonly used applications.

(4) Ethanol blended with gasoline shall meet ASTM D 4806-07 (2007).

(5) Gasoline used for blending with ethanol shall meet ASTM D 4814-08b (2008)

and the finished blend may have a 3-degree variation from the 105ºF requirements, a

10-degree variation from 116ºF requirements, and an 8-degree variation from the 124º

requirements listed in R 285.564. 4 (h) provided both of the following:

(a) The gasoline used for blending with ethanol, after the time it met ASTM D4814-

08b (2008), was not modified or altered in any way prior to or at the time of addition of

ethanol.

(b) The finished blend contains between 9% and 10% ethanol by volume.

History: 1987 AACS; 2003 AACS; 2009 AACS.

R 285.564.3 Gasoline grades.

Rule 3. (1) There shall be the following uniform grades of gasoline:

(a) "Subregular" with an AKI of 85 or above.

(b) "Regular" with an AKI of 87 or above.

(c) "Midgrade 88" with an AKI of 88 or above.

(d) "Midgrade 89" with an AKI of 89 or above.

(e) "Premium" with an AKI of 90 or above.

(f) "Premium 91" with an AKI of 91 or above.

(g) "Premium 92" with an AKI of 92 or above.

(h) "Premium 93" with an AKI of 93 or above.

(i) "Premium 94" with an AKI of 94 or above.

(2) Special grades of gasoline may be offered for sale if listed with and approved by

the department. To apply for listing, the refiner or blender shall provide the

department with the gasoline brand name, the grade specifications, and a copy of the

complete test results for all applicable standards specified in these rules and other

tests as required by the department.

History: 1987 AACS; 2003 AACS; 2009 AACS.

R 285.564.4 Grades of gasoline; specifications.

Rule 4. All uniform and special grades of gasoline shall meet the following

specifications:

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(a) The test method for oxygenates shall be ASTM standard D 5599-00(2005). If the

total amount of any alcohol contained is 1% by volume or greater, the pump shall be

posted with an alcohol notice. Gasoline that contains 10% or less ethanol is not subject

to the notice requirement. Gasoline containing alcohol shall meet all other

specifications contained in these rules. There shall not be intentional addition of methyl

tertiary butyl ether (MTBE) to the gasoline.

(b) The test method for copper strip corrosion shall be ASTM standard D 130-04e1

(2004). Copper strip corrosion shall not exceed No. 1 on the test scale specified in test

method ASTM standard D 130-04e1(2004).

(c) The test method for silver strip corrosion shall be ASTM standard D 4814-08b

(2008) Annex. Silver strip corrosion shall not exceed No. 1 on the test scale specified in

test method ASTM standard D 4814-08b (2008) Annex.

(d) The test method for distillation range shall be ASTM standard D 86-07a(2007).

The following apply:

(i) The 10% evaporation temperature for each month shall not exceed the value

indicated in table 2.

(ii) The 50% evaporation temperature for each month shall not be less than the

minimum or exceed the maximum for the range indicated in table 2. Gasoline

containing 9%-10% ethanol that does not meet this standard may be sold pursuant to

the USEPA Fuel or Fuel Additive Waiver in section 211(F)(4) of Part a of Title II of the

Clean Air Act, Chapter 360, 81 Stat. 502, 42 USC 7545, provided the product meets all

of the conditions in the waiver and the base gasoline used for blending has a 50%

evaporation temperature of not less than 170°F.

(iii) The 90% evaporation temperature shall not exceed the value for each month

indicated in table 2. The end point temperature shall not exceed the value indicated in

table 2.

(iv) The residue shall not exceed the amount indicated in table 2. The use of a trailing

decimal point in a limit indicates that the digit preceding the decimal point is a significant

digit.

(v) Table 2

Month Distillation Temperatures, °F, at 10 % Evaporated Distillation

Temperatures, °F, at 50% Evaporated Distillation Temperatures, °F, at 90%

Evaporated Distillation Temperatures, °F, at End Point Residue Volume %

January 122. 150.-230. 365. 437. 2.%

February 122. 150.-230. 365. 437. 2.%

March 131. 150.-235. 365. 437. 2.%

April 158. 150.-250. 374. 437. 2.%

May 158. 150.-250. 374. 437. 2.%

June 158. 170.-250. 374. 437. 2.%

July 158. 170.-250. 374. 437. 2.%

August 158. 170.-250. 374. 437. 2.%

Sept. 1-15 158. 170.-250. 374. 437. 2.%

Sept. 16-30 158. 150.-250. 374. 437. 2.%

October 131. 150.-235. 365. 437. 2.%

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November 131. 150.-235. 365. 437. 2.%

December 122. 150.-230. 365. 437. 2.%

(vi) The drivability index shall be derived using ASTM D 4814-08b (2008). The

drivability index at the refinery or point of import shall not exceed in any month the

value indicated in table 3. The use of a trailing decimal point in a limit indicates that

the digit preceding the decimal point is a significant digit.

(vii) Table 3

Month Drivability Index

January 1200.

February 1200.

March 1220.

April 1250.

May 1250.

June 1250.

July 1250.

August 1250.

September 1250.

October 1220.

November 1220.

December 1200.

(e) The test method for solvent washed gum shall be ASTM standard D 381-04 (2004).

The solvent washed gum shall not exceed 5.0 mg per 100.0 ml.

(f) The maximum temperature for phase separation of gasoline containing alcohol

shall not exceed in any month the value indicated in table 4:

Table 4

Lower Peninsula Maximum temperature for phase

Month Separation degrees Fahrenheit (CELSIUS)

January

0 (-18)

February

1 (-17)

March

10 (-12)

April

27 (-3)

May

34 (1)

June

45 (7)

July

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50 (10)

August

48 (9)

September

41 (5)

October

32 (0)

November

21 (-6)

December

7 (-14)

Upper Peninsula Maximum temperature for phase

Month Separation degrees Fahrenheit (CELSIUS)

January

-6 (-21)

February

-4 (-20)

March

5 (-15)

April

21 (-6)

May

30 (-1)

June

43 (6)

July

48 (9)

August

48 (9)

September

39 (4)

October

30 (-1)

November

16 (-9)

December

0 (-18)

(g) The test method for vapor pressure for gasoline and gasoline oxygenate blends shall

be ASTM D 6378-07 (2007) or D 5191-07 (2007) The vapor pressure of gasoline shall

not exceed any of the values in table 5 except as provided in section 3 of the act and

regulation 561. Gasoline containing up to 10% ethanol may obtain the 1 psi waiver

indicated for gasoline containing between 9-10 volume % ethanol during the months of

January, February, March, April, May, September 16 to 30, October, November and

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December if the last 3 deliveries of gasoline received by the retailer contained at least

5% ethanol or were straight gasoline.

Table 5

Month Vapor Pressure (gasoline containing less than 9 volume % Ethanol)

Vapor

Pressure (gasoline containing 9-10 volume % ethanol)

January 15.0 psi 16.0 psi

February 15.0 psi 16.0 psi

March 15.0 psi 16.0 psi

April 13.5 psi 14.5 psi

May 13.5 psi 14.5 psi

June 9.0 psi 10.0 psi

July 9.0 psi 10.0 psi

August 9.0 psi 10.0 psi

September 1-15 9.0 psi 10.0 psi

September 16-30 13.5 psi 14.5 psi

October 13.5 psi 14.5 psi

November 15.0 psi 16.0 psi

December 15.0 psi 16.0 psi

(h) The test method for the vapor-liquid ratio for gasoline shall be ASTM standard D

5188-04a (2004). For gasoline, the test temperature at which the vapor-liquid ratio is a

maximum of 20 to 1 shall be the value indicated in table 6. Gasoline containing 9%-

10% ethanol that does not meet this standard may be sold pursuant to the USEPA Fuel or

Fuel Additive waiver, Title II of the Clean Air Act, ch.360, 81 Stat.502 §211(F)(4), 42

U.S.C. §7545, provided the product meets all of the conditions in the waiver and the base

gasoline used for blending does not have a test temperature less than that indicated in

table 6 at which the vapor-liquid ratio is a maximum of 20 to 1.

Table 6

Month V/L (ºF)

January 105

February 105

March 105

April 116

May 116

June 124

July 124

August 124

September 1-15 124

September 15-30 116

October 116

November 105

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December 105

History: 1987 AACS; 2003 AACS; 2009 AACS.

R 285.564.5 Rescinded.

History: 1987 AACS; 2003 AACS; 2009 AACS.

R 285.564.6 Grades of unleaded gasoline; additional specifications.

Rule 6. In addition to the specifications listed in R 285.564.4, all uniform grades of

gasoline shall meet both of the following specifications:

(a) The test method for lead content shall be ASTM standard D 5185-05 (2005).

There shall be no intentional addition of lead compounds to any uniform grade of

gasoline. Any single sample shall contain not more than 0.05 gram (50 milligrams) of

lead per gallon.

(b) The test method for sulfur content shall be ASTM standard D 5453-06 (2006).

Sulfur shall not exceed 95 ppm by weight.

History: 1987 AACS; 2003 AACS; 2009 AACS.

R 285.564.7 Antiknock index standard.

Rule 7. (1) All uniform grades of automotive gasoline shall meet the following

specified standards for antiknock index (octane):

(a) Subregular: not less than 85.0 AKI.

(b) Regular: not less than 87.0 AKI and not less than 82.0 MON.

(c) Midgrade 88: not less than 88.0 AKI and not less than 82.0 MON.

(d) Midgrade 89: not less than 89.0 AKI and not less than 83.0 MON.

(e) Premium: not less than 90.0 AKI.

(f) Premium 91: not less than 91.0 AKI.

(g) Premium 92: not less than 92.0 AKI.

(h) Premium 93: not less than 93.0 AKI.

(i) Premium 94: not less than 94.0 AKI.

(2) The test method for antiknock index shall be ASTM standard D 2700-08 (2008)

for a motor engine and ASTM standard D 2699-08 (2008) for a research engine.

(3) The formula for determination of the antiknock index shall be AKI =(RON +

MON) / ¸ 2.

History: 1987 AACS; 2003 AACS; 2009 AACS.

R 285.564.8 Rescinded.

History: 1987 AACS; 2003 AACS; 2009 AACS.

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R 285.564.9 Rescinded.

History: 1987 AACS; 2003 AACS.

R 285.564.10 Rescinded.

History: 1987 AACS; 2003 AACS; 2009 AACS.

R 285.564.11 ASTM motor fuel standards; adoption by reference.

Rule 11. (1) The department adopts the following standards of the ASTM for

gasoline or an ASTM method approved by the department:

(a) D 86-07a (2007).

(b) D 130-04e1 (2004).

(c) D 6378-07 (2007) or D5191-07 (2007).

(d) D 381-04 (2004).

(e) D 5188-04a (2004).

(f) D 5453-06 (2006).

(g) D 2699-07 (2007).

(h) D 2700-07a (2007).

(i) D 5599-00(2005).

(2) The department adopts the following standards of the ASTM for diesel fuel,

biodiesel, and biodiesel blends or an ASTM standard approved by the department.

(a) D 6751-08 (2008).

(b) D 975-08a (2008).

(c) D 7467-08 (2008).

(3) Copies of these standards may be obtained, at actual printing and mailing cost,

by writing to the Department of Agriculture, Laboratory Division, 940 Venture Lane,

Williamston, Michigan 48895, or, for a fee as specified in this subrule, from the

ASTM, 100 Barr Harbor Drive, W. Conshohocken, PA 19428-2959. The ASTM

standards are composed of volumes priced as follows:

Volume 05.01: D 56 to D 3220 .................................... $311.00

Volume 05.02: D 3221 to D 5293 .......................................$278.00

Volume 05.03: D 5303 to D 6729 ..................................... $299.00

Volume 05.04: D 6730 - latest $396.00

Volume 05.05: Combustion Characteristics .......................$156.00

History: 1987 AACS; 2003 AACS; 2009 AACS.

R 285.564.12 Use variations or exemptions for motor fuel designed for unique

equipment or service.

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Rule 12. Specific use variations or exemptions may be made for motor fuel designed

for unique equipment or service if it can be demonstrated to the department that the

distribution and sale of such motor fuel shall be restricted to such use.

History: 1987 AACS; 2003 AACS; 2009 AACS.

R 285.564.13 Product registration of motor fuels not meeting R 285.564.4.

Rule 13. (1) All motor fuels that do not meet ASTM specifications or standards in R

285.564.4 shall be registered with the director on forms prescribed by the director 30

days before the registrant wishes to engage in sales. The registration form shall include

all of the following information:

(a) Business name and address(es).

(b) Mailing address if different than business address.

(c) Type of ownership of the distributor or retail dealer, such as an individual,

partnership, association, trust, corporation, or any other legal entity or combination

thereof.

(d) An authorized signature, title, and date for each registration.

(e) Product brand name and product description.

(f) A product specification sheet shall be attached.

(g) If the motor fuel is marketed under a waiver granted by the United States

environmental protection agency the registration must include the regulatory citation

number or other acceptable proof of a valid waiver.

(h) If requested by the department, a complete list of business names and addresses

where the product is being delivered to or offered for sale from.

(2) Registration is subject to annual renewal. All previous listings and registrations

with the department are rescinded 30 days after adoption of this regulation.

(3) Re-registration is required 30 days before any changes in subrule (1) of this rule.

(4) The Director may decline to register any product that actually or by implication

would deceive or tend to deceive a purchaser as to the identity or the quality of the

motor fuel.

(5) The registration is not transferable.

History: 1987 AACS; 2003 AACS; 2009 AACS.

R 285.564.14 Retailer requirements.

Rule 14. A Retailer offering an ethanol blended product at retail shall do all of the

following:

(a) Remove all water and precipitated materials from the storage tank before the

initial gasoline-alcohol blend is delivered into the tank.

(b) Install a suitable filter, 10 microns or less, in the meter inlet or discharge line and

immediately adjacent to the meter.

(c) Record the water level of blended product storage tanks daily and make these

records available to the department upon request.

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(d) On a regular basis and upon receipt of a quality complaint examine the blended

product to ensure that the product dispensed remains clear and bright and free of visible

water or haze.

History: 2009 AACS.

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