The emerging new emission control technologies for diesel engines simply are not viable without sulfur-free fuel. That is why we applaud EPA for taking this crucial first step toward enabling highly efficient, advanced technology diesel vehicles in this country. If adopted, the proposal for capping sulfur in diesel fuel nationwide at 15 ppm would dramatically reduce sulfur from its current high levels, and this will have an enormous, positive impact on air quality around the country. And it opens the door to continued investment in clean diesel technologies, which are advancing rapidly. But we support EPA's efforts and hope the Agency holds firm in the final rule with stringent sulfur control.
Many stakeholders support reducing sulfur to ultra-low levels.
Earlier today, we heard the testimony of the Engine Manufacturers Association. Like us, it is depending on ultra-low sulfur diesel fuel to enable the new, clean diesel technology. With This Proposal. First, the Agency has reinforced the notion that the vehicle and its fuel are to be treated as a system. As the technology moves forward and as emission standards become tighter, this principle becomes increasingly significant.