MotorHome, June 26, 2006
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The Environmental Protection Agency (EPA) now requires U.S. refineries to begin making ultra-low-sulfur diesel (ULSD), which has 97 percent less sulfur than ordinary diesel fuel. The rule requires 80 percent of the diesel produced for highway-use be ULSD. By October 15, all stations selling diesel will be required to sell ULSD.
Diesel vehicles emit about 10 percent less pollution running on ULSD. Heavy-duty trucks and buses with new clean-diesel engines are due in early 2007. They will cut soot and nitrous-oxide emissions by 90 percent.
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