Heating oil is now the same as ultra-low suphur diesel:
"... Because NYH {New York Harbor} is the delivery point of the Nymex futures contract and because most terminals are expected to store only one commingled product (ULSD), rather than segregating two distillate products (home heating oil and ULSD), physical delivery of higher sulfur home heating oil would become difficult in the near future..."
Heating oil futures contract now uses ultra-low sulfur diesel fuel - Today in Energy - U.S. Energy Information Administration (EIA)
It is now difficult to find any diesel fuel that is not ultra-low suphur. Sulphur in diesel acts as a lubricant in the injectiion system, so running older diesels on ultra-low may cause issues:
http://cliffordpower.com/wp/wp-content/uploads/2010/08/CP_info_sheet_26_low_sulfur_fuel.pdf
There are additives one may add to the fuel to restore lubricity. Biodiesel also has good lubricity.
chopped, good point about what ulsd does to a heating unit if it is in fact ulsd. Also it seems to me that if the fuel oil is NOT ULSD (higher sulfur content) and is used in a 2007 or newer diesel the only effect would be more lubrication or perhaps hurt something with the emissions system. Sounds like you guys with older diesels need to be concerned about the ULSD Thanks for the input everyone. I got an education, but still not ready to put fuel oil in my machine just yet. It would be convenient but I don't burn enough to take the risk.
I would not be concerned about burning ULSD in a boiler/furnace:
Cleaner Home Heating Oil
http://www.oeconline.org/resources/publications/factsheetarchive/biodieselforboilers
We burn it in a very old 300 hp ABCO boiler and a 20-year-old 800 hp Cleaver Brooks boiler @ work.
Around here, I can get offroad from a pump the same as on-road. There is a pretty significant difference between them. The "on road" diesel is the ultra-low sulfur stuff, and the tractor fuel is not. The machine belches less smoke and generally runs quieter with the on-road, over the off-road.Ever watch Penn and Teller bullsh** show. That guys quote was pure BS. There is no difference in off road and on road fuel other than the dye. I don't know what was wrong with your tractor but it was not the road taxed fuel. At certain times of the year with cold weather approaching there could be some held over number 2 fuel in the pumps and farm diesel might be #1 already. That should not make your tractor loose power unless it was very cold and the fuel was gelling up a bit. Transmission oil wouldn't make the gelling go away though. Could have been a quart of Power Serve or some other anti-gel agent or a fuel treatment to remove free water from some contaminated fuel that you got.