Okla. Stat. tit. 52, § 52-391: Sale of petroleum products under deception as to quality

or identity.

It shall be unlawful for a person, firm or corporation, to

store, sell, expose for sale or offer for sale, any liquid fuels,

lubricating oils, greases or other similar products in any manner

whatsoever, which deceives, tends to deceive, or has the effect of

deceiving the purchaser as to the nature, quality or identity of the

product so sold or offered for sale.