Will off road diesel hurt 6liter ford diesel?

Using off-road diesel fuel in your 6-liter Ford diesel may not be advisable and can potentially cause issues. Off-road diesel fuel generally has a higher sulfur content than on-road diesel, which can accelerate wear and tear on emissions control systems, potentially leading to reduced engine performance and longevity.

However, it's essential to consult your vehicle's user manual or specific instructions from Ford to verify if off-road diesel is acceptable or not. If off-road diesel is compatible and meets the requirements specified by Ford, you can use it without significant issues.

Please note that using off-road diesel in vehicles intended for on-road use may violate environmental regulations and can result in legal penalties in certain jurisdictions. It's always best to use the recommended type of fuel for your 6-liter Ford diesel to ensure optimal performance, longevity, and compliance with any relevant regulations.