I don't know if we need a chemist. Chevron, Mobil, and Amoco/BP list the cloud piont, pour point sulpher and so on. Some fuels have more wax than others and will gel at a higher temp. Furnace oil is off road use and sold for high sulfer off road. you can buy: kerosene, Jet fuel, #1D, #2D high sulpher, #2D low sulpher, Blended #2D which is about 25% #1D, diesel fuel with lower cloud points, premium low sulpher with additives. It has been many years since I worked for Shell and Amoco so I am going from memory on the fuel grades. The fuels do not all come from the same pipe at the bulk terminal even though a dealer may use some of these interchangeably. The standard cetane is about 40 for #2 and 50+ for Amoco premier. Cold starting is improved as the fuel is a bit more volitile.