Okla. Stat. tit. 47, § 605
Before any brake fluid shall be bartered, sold, offered for sale, exchanged in any transaction, or held with intent to sell within this state, or be used in any motor vehicle licensed in this state, a sample thereof must be inspected by the Fuel Inspection Division, Corporation Commission of Oklahoma, and bear an official permit number of said Corporation Commission. Upon the initial application of the manufacturer, packer, or distributor and the payment of a fee of Fifty Dollars ($50.00) for each brand of brake fluid submitted, the Corporation Commission of Oklahoma shall inspect the brake fluid submitted. If said brake fluid meets the standard specification of S.A.E. 70-R-1, the Corporation Commission shall issue the applicant, under an official permit number, an annual written permit authorizing the sale of such brake fluid in the State of Oklahoma for one (1) fiscal year, July 1st to June 30th, for which the inspection fee is paid. On approval of an application for renewal of a permit, the fee shall not exceed Thirty-five Dollars ($35.00) per annum. The original permit and/or renewal issued by the Corporation Commission shall bear the same number and shall not be transferable. If the Corporation Commission shall at a later date find that the product to be bartered, sold, offered for sale, exchanged in any transaction, or held with intent to sell, has been materially altered without the written permission of the Corporation Commission, or that the product is below the minimum specification required by this Act, or that the product has been adulterated, or a change has been made in the name, brand or trademark under which the brake fluid is sold, or that it otherwise violates the provisions of this Act, the Corporation Commission shall notify the applicant and the permit shall be canceled forthwith.
Laws 1957, p. 89, § 5.