Direct Final Rule for Control of Air Pollution From New Motor Vehicles; Revisions to Motor Vehicle Diesel Fuel Sulfur Transition Provisions; and Technical Amendments to the Highway Diesel, Nonroad Diesel, and Tier 2 Gasoline Programs
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The highway diesel fuel sulfur program, finalized in 2001, resulted in the nationwide transition in 2006 of most diesel fuel from low-sulfur diesel (LSD) to ultra-low sulfur diesel (ULSD). Some in the diesel fuel production and distribution industries indicated that they may be unable to complete the transition to ULSD by the current deadlines at the very furthest reaches of the distribution system. In response, this action made limited changes to the transition provisions for entities in the highway diesel distribution system. These changes finely balance the concerns of the fuel industry and the critical need for ULSD to be available for 2007 diesel vehicles and engines.