U.S. retail gasoline declined for a second week, led by a price drop in the Rocky Mountain region, as refiners returned from maintenance. Regular, unleaded gasoline at filling stations averaged $3.269 a gallon in the seven days through yesterday, down 0.3 cents from a week earlier, the Energy Information Administration said on its website. Prices are 3.7 percent below year-earlier levels. The biggest drop was in the Rocky Mountains , where the motor fuel fell 3.6 cents to $3.145. U.S. pump prices are at a three-year low for this time of year as refiners take advantage of cheaper domestic crude supplies. Gasoline slid 2.1 cents the previous week as refiners produced a record seasonal amount of the fuel as they increased operations after maintenance. “We could be looking at a couple pennies of relief by the time the next report comes around,” James Williams , the president of energy […]