The average price of a gallon of self-serve regular gasoline in San Diego County rose four-tenths of a cent Friday to $4.779, its highest amount since May 28.

The average price is 3.5 cents more than one week ago, 23.3 cents more than one month ago and 8.8 cents more than one year ago, according to figures from the AAA and the Oil Price Information Service. It has dropped $1.655 since rising to a record $6.434 on Oct. 5, 2022.

“According to Oil Price Information Service, the Phillips 66 refinery in Wilmington and Carson has begun permanently winding down operations there after announcing it would shut down by the end of this year,” Automobile Club of Southern California spokesman Doug Shupe said Thursday.

“OPIS also reports that yesterday’s Energy Information Administration data shows W

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