Will the older diesels do okay on the ULSD? How will it affect their mileage and power? Also, does the ULSD have any of the lubricants in it to protect the pumps? I know the old diesel fuel did, but in the last few years the lubricant package in the LSD was somewhat stripped from diesel and it was some of the cause of pump failures from all three (Cummins, Duramax and PS), I know the VP44 had a weak LP that caused most of their failures though.