This week the Gasoline and Diesel Fuel Update released by the EIA reported that the national average diesel fuel price declined two cents from last week to $4.00 per gallon. Currently the Gulf Coast has the lowest average diesel fuel price in the nation at $3.80 per gallon, one cent lower than last week. The Rocky Mountain price was also down from last week by a penny, reducing the average price per gallon of diesel fuel to $3.99. The average diesel fuel price in both the Midwest and West Coast declined by two cents from last week to $3.99 per gallon and $4.02 per gallon respectively. The East Coast continues to be the region with the highest average diesel fuel cost at $4.14 per gallon, two cents lower than last week.