Oil prices up over fall in US stockpiles and Middle East tensions In this April 4, 2005 file photo, a sports utility vehicle drives past an ExxonMobil refinery in Baytown, Texas. Exxon Mobil Corp., the world's biggest oil refiner, will spend more than $1 billion in the next couple of years to increase its global production of cleaner-burning diesel by about 10 percent, the company said Tuesday, Dec. 16, 2008....
