(815 ILCS 440/2.4) (from Ch. 96 1/2, par. 7702.4)
    Sec. 2.4. "Lubricating oil" means all oil regardless of origin which:
    (a) is suitable for use as a lubricant or
    (b) is sold for use as a lubricant.
(Source: P.A. 81-379.)