According to the authoritative Oil Price Information Service, retailers sold gas for an average 13 cents per gallon more than they paid for it.

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"There is a tremendous amount of expansion, " said Tom Kloza, chief oil analyst at the Oil Price Information Service, speaking of projects at existing facilities.

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"I'm not surprised at what I'm seeing, but I am surprised it's coming early, " said Tom Kloza, Chief Oil Analyst at the Oil Price Information Service.

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