815 ILCS 440/2.1

(815 ILCS 440/2.1) (from Ch. 96 1/2, par. 7702.1)

Sec. 2.1. "Waste oil" or "used oil" means any oil which has been refined from crude oil, has been used, and as a result of such use has been contaminated by physical or chemical impurities.

(Source: P.A. 81-379.)