The average price of a gallon of self-serve regular gasoline in Riverside County was unchanged Friday for the fourth time in five days, remaining at $4.60.
The average price is six-tenths of a cent less than one week ago but 16.7 cents more than one month ago and 17.2 cents higher than one year ago, according to figures from the AAA and the Oil Price Information Service.
The average price was unchanged Monday, Tuesday and Thursday. It dropped a half-cent Wednesday…