Gasoline prices in Massachusetts continue their slow but steady decline.AAA-Northeast found in its October 16th weekly survey of gas prices in Massachusetts that self-serve, regular unleaded is averaging $2.51 a gallon, down four cents from last week. That price is four cents above the national average of $2.47.
AAA found a range in the price of unleaded regular of 50 cents, from a low of $2.29 to a high of $2.79.