Refining Co Valero Energy Saw Its September 2022 Quarter Refining Margins Increase By $3.2 Bil and More Than 100% of That Was Due to Substantially Higher Diesel Fuel Prices. The Increase in the Market Prices For Diesel Fuel in the Four US Regions in the Sept 2022 Quarter vs in the Year Ago Quarter Were Amazingly High: US Gulf Coast +247%, US Mid-Continent +212%, US North Atlantic +220% and US West Coast +178%.