(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.
(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).