Not trying to start a war here but the two fuels are not the same.....they have similar specs as far as distillation curves, gel temps. and the like but, on road diesel is distilled as a product, cleaned of water and filtered down to less than 25 micron particulates. Off road diesel is a blend of on road diesel that did not make spec. and whatever distilled product it will take to get it on spec., it is then filtered down to less than 70 micron particulates and of course red die is added. Now...these products will do very similar jobs in a tractor, older tractors will benefit from the higher sulfur content of off road diesel while newer tractors have mostly viton seals in the fuel system and they really don't care what type fuel they drink. With the filtering systems on todays machines, I would not be afraid to run off road fuel in one but would not travel too far out of my way to get it either. If it is readily available in your area I say go for it but be sure and change your fuel filters on schedule.
