U.S. diesel futures have soared about 40 percent in the last two months, prompting independent refiners to pounce, selling future output on the view that resurgent domestic demand and higher exports may turn out to provide only a brief boost. The surprise rally in U.S. diesel futures has put prices on track for their biggest quarterly percentage gain in seven years. Money managers and hedge funds have invested heavily in the fuel as stronger-than-expected demand has helped draw down record inventories. Diesel typically enjoys strong seasonal demand in these months from farmers fueling tractors and equipment during the spring planting season. But prices this year have gotten an extra boost from robust exports to Europe and Latin America. Strikes in France have slashed European supplies for almost two […]