Ala. Code § 8-17-136: Changing Contents of Containers.

It shall be unlawful for any person to deposit or deliver, or knowingly aid or assist in depositing or delivering, into any tank, receptacle, or other container, any liquid motor fuel, lubricating oil, grease or similar petroleum products other than those to be stored therein and distributed therefrom, as indicated by the brand, name, trade name, trademark, symbol or sign of the manufacturer or distributor appearing on the tank, pump, container, or other distributing equipment from which the same is sold, offered for sale or distributed.