... Used Oil Heater 2. used oil, multi-oil heater 3. diesel oil, light oil heater 4. waste vegetable, gear, engine oil heater. Used Oil Heater HB-EXT-20A: Descriptions:1. Oil ... are applicable, e.g. waste engine oil, waste gear oil, waste vegetable oil, diesel etc.2. Floor type, automatic ... 4. Inside room purpose machine;5. Heating adjustable by adjusting burner’s output.Used Oli heater,waste oil heater