... not use any chemicals. 2.Friendly environment. Used Black Motor Oil To Diesel Fuel Oil:Series JZC waste ... special for treating the black waste oil, including waste engine oil, lube oil, hydraulic oil, gear oil, ... have another model—JZS Waste Engine Oil Recycling Machine, it mainly used to change black waste oil to ... from JZC machine, or can be the waste engine oil self, JZC machine don’t use electric ...