ITS ALL LOW SULFUR "ULSD". The pumps say no.1 diesel heating fuel dyed or "stove oil" Probably cut it with kerosene.... dont know dont care. No.2 diesel died off road non-taxable use, No.2 clear for on-road usage. This different grade of diesel OR ULSD thing has been argued over in other threads too... run what you want to run, add what you want to add to it. ALL diesel eventually will be low sulfur everywhere for anything, just a matter of time, unless you live somewhere other than the U.S. Not gunna get away from it.