... use the alkaline complex catalyst refines the oil, the recycled oil haven't change the color and haven' ... , blender; b.. Chemistry treatment system: Chemistry reactor, blender,oil pump c. Heating distilling system: distilling tower, distilling kettle, ... can recycle gasoline oil, diesel oil, engine oil, rubber oil and other lubricant oil to clean oil. d. High quality refined oil, no any discoloration ...