September RBOB prices traded lower during the initial morning hours, pressured in part by private industry data that showed an unexpected build in US gasoline supplies last week. Expectations for this morning's EIA report are for a draw in US gasoline supplies of around 1.5 million barrels. The situation with the California refinery fire has some in the trade thinking the refinery could be down for a couple of months, and that loss of supply could become a supportive force over the near term.