Regeneration of Used Engine Lubrication Oil by Solvent Extraction. The Solvent Influence on Oil Ratio - STERPU, Ancaelena Eliza; DUMITRU, Anca Iuliana; NEAGU, Anişoara Arleziana (The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science, 2013)