Google "US total gasoline retail sales by refiners" and you'll find that your linked table/graph represents only about 10% of transactions. It appears from a quick review that this table - U.S. Total Gasoline All Sales/Deliveries by Prime Supplier gives the actual total. You're the man. Thanks for looking into it. I believe that's the explanation. The DOE chart I put up was referred to me by a poster on Rantburg. I thought there was something that didn't add up, but couldn't, for the life of me, figure out what.