(35 ILCS 505/1.8) (from Ch. 120, par. 417.8)
    Sec. 1.8. "Gallon" means, in addition to its ordinary meaning, its equivalent in a capacity of measurement of substance in a gaseous state. In the case of liquefied natural gas or propane used as motor fuel, "gallon" means a diesel gallon equivalent as defined by Section 1.8A of this Act. In the case of compressed natural gas used as motor fuel, "gallon" means a gasoline gallon equivalent as defined in Section 1.8B of this Act.
(Source: P.A. 100-9, eff. 7-1-17.)