Section R. 285.564.4 - Grades of gasoline; specificationsRule 4. All uniform and special grades of gasoline shall meet the following specifications:
(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 170Chr(176)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.% |
| 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 Month | Maximum temperature for phase Separation degrees Fahrenheit (CELSIUS) |
| January | 0 (-18) |
| February | 1 (-17) |
| March | 10 (-12) |
| April | 27 (-3) |
| May | 34 (1) |
| June | 45 (7) |
| July | 50 (10) |
| August | 48 (9) |
| September | 41 (5) |
| October | 32 (0) |
| November | 21 (-6) |
| December | 7 (-14) |
| Upper Peninsula Month | Maximum temperature for phase 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 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 |
| December | 105 |
Mich. Admin. Code R. 285.564.4
1987 AACS; 2003 AACS; 2009 AACS