View all text of Subpart D [§ 21.31 - § 21.81]
§ 21.55 - Formula No. 28-A.
(a) Formula. To every 100 gallons of alcohol add:
One gallon or any combination totaling 1 gallon of either gasoline, unleaded gasoline, heptane, or rubber hydrocarbon solvent.(b) Authorized uses. (1) As a fuel:
611. Automobile and supplementary fuels. 612. Airplane and supplementary fuels. 613. Rocket and jet fuels. 620. Proprietary heating fuels. 630. Other fuel uses.(2) Miscellaneous uses:
812. Product development and pilot plant uses (own use only).