A. No person shall sell, offer for sale or permit the sale of any petroleum product unless there is firmly attached or painted on the container or dispenser from which the petroleum product is offered for sale a sign or label stating the grade or type of product being offered for sale. The sign or label shall be plainly, visibly and prominently displayed in a manner prescribed by regulation of the board.

B. The board may identify petroleum products of a special nature, composition or quality, and it may establish labeling requirements for such products.

C. A sign or label used in connection with automotive motor or lubricating oil shall include the society of automotive engineers viscosity grade classification number preceded by the letters “SAE”.