... used internal-combustion engine oil including diesel engine oil, gasoline engine oil, car oil, motor oil,ship engine oil, truck oil, ... pump; 4. Cooling system: refrigerating machine, water pump, water tank, cooler I,cooler II, Condenser; 5. Vacuum system: Vacuum ... pump, radiator,deodorizer. 7. oil storage system: distilling storage tank 8. Control system: all kinds of gauge( vacuum gauge, pressure ...