Ultra-Low Sulfur Diesel Distribution
Ultra-low sulfur diesel (ULSD) is being distributed via existing infrastructure and sold at retail fueling stations. In California, all diesel fuel had to be ULSD by 2006. In the rest of the United States, most diesel is ULSD until 2010, at which time all diesel must be ULSD. In the period until 2010, retail fueling stations are required to specify the type of fuel dispensed by each pump (see labels).
