... #1, #3, #4 heating oils, waste mixed heavy oil etc., as well as regular oils, such as diesel, ... with the requirements of EURO III;7. Big oil tank optional, as big as 100L container for ... holding waste oil, pumping system is held at the top to pump waste oil into burner machine; At ... is heating instrument at the bottom of big oil tank to pre-heat fuel before pumping, esp. considerate for ...