Diesel or Kerosene can be added to your oil tank if you are running low and a delivery cannot be made prior to a potential run out. Best case scenario Diesel or Kerosene can be added to the tank prior to running completely out of oil. Adding the alternative product prior to a run out could potentially prevent you from the following: having to bleed the lines and restart furnace or stirring up sludge on the bottom of the tank and causing blockages. To prevent run outs or near run outs in the future you can also sign up for automatic deliveries with Shipley, receive priority service and let us monitor the tank(s) for you.