Gas in the Riverside area is down 15¢ from last week, now averaging $6.04 a gallon. Filling a 15-gallon tank in the Riverside area costs about $22 more than a year ago. It is $6.04 a gallon, $1.47 more than a year ago. Filling a 15-gallon tank costs about $22 more. It is $6.04 a gallon, down 15¢ from last week but still $1.47 above a year ago. Prices are AAA's daily averages for regular gas, last updated October 19.

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