815 ILCS 435/1
Every person dealing in previously used or previously used and reclaimed, re-refined, recleaned or reconditioned lubricating oils, lubricants or mixtures of lubricants shall at all times have each and every container or item of equipment in or through which any of such products are sold, kept for sale, displayed or dispensed plainly labeled in lettering as large as any other lettering thereon and in any event in letters of not less than one-half inch in height showing that the contents thereof is a previously used product; provided that, upon the promulgation of labeling standards applicable to recycled oil by the Federal Trade Commission as prescribed pursuant to Title V, Section 383 of the federal "Energy Policy and Conservation Act" ( P.L. 94-163), the labeling requirements provided in this Section shall no longer be in effect and the State labeling standards shall be those promulgated by the Federal Trade Commission. Every person who causes to be published, displayed or circulated any advertising matter offering for sale any previously used or previously used and reclaimed, re-refined, recleaned or reconditioned lubricating oils, lubricants or mixtures of lubricants, not shown to be substantially equivalent to new oil intended for an identical end use under test procedures promulgated by the Federal Trade Commission as prescribed under Title V, Section 383 of the federal "Energy Policy and Conservation Act" ( P.L. 94-163), shall state in such advertising in letters at least as large as any other lettering therein the fact that such products have been previously used. Any person violating any provision of this act shall be guilty of a Class B misdemeanor.
815 ILCS 435/1