NSH GER Used Oil Regeneration System Application NSH GER Gas engine oil regeneration System is particularly suitable to regenerate internal-combustion engine oil including diesel engine oil, gasoline engine oil and internal-combustion engine oils. GER series can effectively remove colloid, oxid, acid, pitch, particles, impurities, water, gas in the oil. Specially, GER can restore the color of used internal-combustion engine oil and remove the scent rapidly.