* Emissions Control: They help reduce harmful emissions, and running off-road fuel will likely result in your truck failing emissions testing (if required in your area). More importantly, it contributes to increased air pollution.
* Fuel System Lubrication: On-road diesel contains lubricity agents that protect the fuel injectors, high-pressure fuel pump, and other sensitive components in your Powerstroke's fuel system. Off-road fuel lacks these, leading to premature wear and costly repairs. This is particularly damaging to the high-pressure injection system in a Powerstroke.
* Legal Compliance: Using dyed off-road fuel in an on-road vehicle is illegal in most jurisdictions. You could face significant fines.
While off-road fuel might be cheaper, the potential damage to your engine far outweighs any savings. Stick to on-road diesel fuel to protect your investment and comply with the law.