Tennessee Code Title 12. Public Property, Printing and Contracts § 12-3-807

(a) Standard specifications adopted for lubricating motor oil for competitive solicitations to be let by the central procurement office, or by the appropriate purchasing agencies for any political subdivision of the state, shall be prescribed to include re-refined or recycled lubricating motor oil. Such specifications may exclude re-refined or recycled lubricating motor oil for circumstances or equipment that require specialized treatment, upon submission of documented evidence to the procurement commission or the appropriate purchasing agency of the political subdivision to substantiate each such claim for exclusion.

(b) Standard specifications adopted for lubricating motor oil for competitive solicitations to be let by any state agency or by any political subdivision of the state, shall be prescribed to include re-refined or recycled lubricating motor oil. Such specifications may exclude re-refined or recycled lubricating motor oil for circumstances or equipment that require specialized treatment, upon submission of documented evidence to the appropriate departmental, institutional or agency head to substantiate each such claim for exclusion. The requirements of this section shall not be construed to prohibit such state agency from purchasing and contracting for the purchase of such re-refined or recycled lubricating motor oil through the central procurement office or through the appropriate local purchasing agency.

(c) Any nonprofit corporation receiving funding from the state or contracting with any department, institution, or agency of state government or political subdivision of the state to provide services to the public, shall be authorized to purchase and contract for the purchase of such re-refined or recycled lubricating motor oil as provided in this section through the central procurement office under this chapter or through the appropriate local purchasing agency.