Frequent Questions

Public reaction to new fuels in the past has been mixed (i.e., RFG in Milwaukee, CARB II Diesel in California). What steps does EPA intend to take to educate and inform owners of diesel-powered motor vehicles of the changes to fuel specifications, perform

EPA currently has all documents associated with the diesel fuel rules available on its website ( and will be periodically providing additional updates to the website to provide summary descriptions for the public of the benefits and impacts of the rules. Additional steps will be determined over the course of the remaining months leading up to June 2006. EPA is participating in an outreach working group with industry and other governmental agencies on developing outreach materials to educate the public on ULSD- the Clean Diesel Fuel Alliance (

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