Have a 92 Cummins,and a question. What is the difference between heating and diesel oils. Both are #2,and my oil bill even says #2 dyed diesel. I know about the taxes and the reason for the dye,my question is:for my information only,and not getting into the legal issues,could someone run their truck on heating oil without any problems,and are the fuels the same,or are additives added to diesel. I'm not saying I would,but this arguement has been going around at work for some time now,(gas vs diesel vs heating)and no one ever has the final answer. Thanks,Stan