All diesel be it on or off road should have a supplement incorporated by you. Here's why: Store bought diesel is very hard on the motor, has high sulfur and deposit content, sometimes and often has high moisture content and can have a low- cetane. I you use a thing called Power Service supplement and even run their winter type , well in winter for the anti gel properties. Ford Powerstrokes however,like i drive, already have a pretty fail safe heated fuel system. It's nice to have the higher cetane a s well that a good supplement can add. Also if you're storin more than 50 gallons, and for long periods include a good Bio-Cide to protect against the build up of microorganisms in the fuel characteristic of storing diesel.