Can you run off-road diesel in a 7.3L F250?

No, you should not run off-road diesel in a 7.3L Powerstroke F250. While it might seem like a cost-saving measure, off-road diesel (dyed red diesel) lacks the required additives and lubricity for the 7.3L Powerstroke engine. Using it will likely lead to:

* Increased wear and tear: The lack of proper lubricity can cause excessive wear on fuel injectors, fuel pump, and other critical engine components.

* Fuel system damage: Off-road diesel can clog injectors and fuel filters more easily.

* Engine failure: In the long run, using off-road diesel can lead to premature engine failure, resulting in costly repairs.

* Legal repercussions: Using dyed diesel in an on-road vehicle is illegal in most places and can result in significant fines. The red dye is a marker that indicates it's untaxed fuel meant for off-road use only.

Stick to using on-road diesel fuel that meets the specifications recommended by Ford for your 7.3L Powerstroke engine. The small difference in price is far outweighed by the potential for costly repairs and legal issues.