N.C. Gen. Stat. § 119-3

It shall be unlawful for any person, firm or corporation to display, at the place of sale, any sign, label or other designating mark which describes any lubricating oil for internal combustion engines not actually sold or offered for sale or delivered at the location at which the sign, label or other designating mark is displayed, or to display any label upon any container which label names or describes any lubricating oil for internal combustion engines not actually contained therein, but offered for sale or sold as such: Provided, this section shall not prevent the advertising of such products when no lubricating oil is offered for sale at such place of advertisement.