NSH GER black motor oil purifier(oil purifier, oil purification, oil filtration, oil recycling, oil regeneration, oil filtering, oil filter, oil re-refining, oil purifying, oil treatment) 1.High efficiency 2.Good appearence 3. ... internal-combustion engine oil including diesel engine oil, gasoline engine oil and used hydraulic oil, other used machinery's lubrication oil. GER Recycling series are able ...