LYE series oil regeneration system machine is particularly suitable to regenerate of waste engine oil including diesel engine oil, gasoline engine oil and internal-combustion engine oils and used hydraulic oil, machinery’s lubricating oil and blended oils. It not only removes the impurities, water, and acid matter, organic and inorganic acid, carbon particulate matter and peroxides effectively. In gas engine oil, bitumen and colloid and other sludge can be removed similarly. But also can restore the color of used engine oil from black to new oil color and remove the scent rapidly. After treatment by the machines, the color of the treated oil is recovered and the quality indexes are improved too so as to resume the performance of engine oil, to keep the engine in good lubricating conditions, to guarantee lubricating system of gas engine to work properly and to prolong the service life of gas engine and oil, finally, to economize expense on oil purchasing and save oil resource. LYE series is designed for recycling kinds of engine oil used in ships, cars and other vehicles.