you dont need a turbo nozzle with a hot wash to remove gum the normal lance works fine, i find it best to reduce the flow to about 8ltr a minute and put the heat up to full it blasts the gum away at an amazing rate and you dont use as much water either, there is also less spray caused doing it this way so less worry about splashing anyone passing by. (doesnt matter if area coned of or not you always get some dummy walking where they shoudnt)