Our Diesel Fuel has higher content of sulfur. It is 0.52% versus 0.01% in Ultra Low Sulfur diesel fuel available at the pump. Our Fuel is PERFECT to be blended with Ultra Low Sulfur one to get the RIGHT mix of diesel fuel to power ANY diesel engines. In fact it is better than simply using Ultra Low Sulphur diesel fuel because this blend will NOT cause your engine to go TOO DRY and the cost of maintanence will be significantly lower. Our content of sulfur equals the diesel fuel which was available at the pump in the USA prior 2007.