A bench process for a laboratory scale of two-stage extraction of hydrocarbons from used engine oils has been designed and built. The study was based on the consideration that the used engine oil is as recyclable as the other consumed materials. The system consisted of a reactor (16mm ID & 320mm long), a cylindrical furnace (60mm ID & 300mm long), a stainless steel separator, and an ice bath. In this process, biogas (CH4 & CO2) was introduced in the second stage of the extraction process. Extraction of the used engine oil was carried out in the first reactor at a temperature range of 700ºC - 750ºC and in the second reactor at 800ºC. Product yields consisted of 51.0 wt% in the hydrocarbon range (C5 – C20), including 25.0 wt% naphtha, 14.0 wt% kerosene, and 12.0 wt% diesel in the first stage extract. The remainder consisted of 37.0 wt% light gas oil, 11 wt% heavy gas oil and 1.0 wt% nondistillate. The second stage extract contained 37.0 wt % of compounds in the sought after hydrocarbon region comprising of 12.0 wt% naphtha, 12.0 wt% kerosene and 13.0 wt% diesel, leaving behind 45.0 wt% of light gas oil, 16.0 wt% heavy gas oil, 2.0 wt% nondistillate. These results are encouraging since they show the feasibility of the current study.