Ger Used Oil Re-Refining, Oil Purifier, Oil Clean is particularly suitable to regenerate and refine internal-combustion engine oil including diesel engine oil, gasoline engine oil and internal-combustion engine oils. GER used oil re refining series can effectively remove colloid, oxid, acid, pitch, particles, impurities, water, gas in the oil. Specially, GER used oil refining machine can restore the color of used internal-combustion engine oil and remove the scent rapidly. oil filtration, oil purification, oil filter, oil purifier, oil recycling, oil treatment, oil regeneration, oil restoration, oil filtering, waste oil disposal, oil reclaiming, waste oil management, energy saving, oil re refining