"Home heating oil" can be pretty much anything, or a mix of two more products from kerosene to dang near bunker fuel, depending on where you're located, who you buy it from, and what's available for the vendor to buy on the market. The sulfur level can be all over the map also, again depending on which state you're in. Unless the oil company you buy from can give you some sort of certification for the product they deliver I would never use anything but ULSD in any engine that requires it. Very likely to cost you thousands of dollars in short order, the really new stuff you might lose the DPF or the catalytic in addition to parts of the fuel system. I would think best case you would have constant fuel filter issues, the newer machines the fuels filters are like a factor of ten times finer than the old standards. Home oil furnaces are a high pressure pump, a nozzle, ignitor and a blower, not exactly high tech or high performance.