1.Various fuels are applicable.eg.waste engine oil, diesel, waste vegetable oil, etc 2.With unique design waste oil heater HB-EXT-20ADescriptions:1. Oil consumption: 2 - 20 (KG/Hour ... crankcase oils, used Glycerin, used Hydraulic oil, used synthetic oils, waste machine shop cutting oil, waste mineral spirits solvent, waste grades #1, #3, #4 heating ...