ENGINE MAKERS, REFINERS FACE OFF ON POSSIBLE EPA DIESEL RULE WAIVER

Petrochemical refiners are urging EPA to relax sulfur limits in diesel fuel in response to hydrogen supply disruptions resulting from Hurricane Katrina. But engine manufacturers are opposing the effort, saying it may damage many engines and increase particulate matter emissions. The National Petrochemical and Refiners Association is talking to EPA about a possible waiver of a nationwide, year-round limit of 500 parts per million (ppm) of sulfur in diesel fuel because of damage to hydrogen supply operations along the Gulf...