Generally speaking, it is safe to put off road diesel fuel in a tractor if it is used for agricultural purposes. Off road diesel fuel is dyed red to distinguish it from on-road diesel, which is taxed differently. However, off-road diesel fuel is not subject to the same quality and composition standards as on-road diesel. As such, it may contain higher levels of sulfur and pollutants, which can damage your tractor's engine.
On the other hand, it is not safe to use off road diesel fuel in a tractor if it is used for commercial purposes. This is because off-road diesel fuel is not taxed at the same rate as on-road diesel. As such, it can be cheaper for trucking companies and other commercial entities to use off road diesel fuel in their vehicles, even if it is not intended for that use. This can lead to tax evasion and other illegal activities.
If you are unsure of whether or not your tractor can use off-road diesel fuel, it is best to consult with your tractor's manufacturer or a qualified mechanic.
