... carbon, colloid, asphalt and wax from oil, making black engine oil become transparent golden color. This equipment has the functions ... of dewatering, degassing, decolor. Improving the engine oil’s properties, restoring the oil’s performance and lowering ... oil recycling 14.IIJ-II-BDV oil tester, insulating oil dielectric strength tester 15.NKEE-Oil moisture sensor, water content ...