BP PLC said it needs oil prices to rise to $60 a barrel in order to break even, as the British oil giant ramped up debt levels last year to fund spending, maintain its dividend and cope with costs associated with the 2010 Deepwater Horizon disaster. The company said Tuesday the blowout in the Gulf of Mexico cost it another $7.1 billion in pretax payments last year. The total pretax bill has now reached $62.6 billion for a disaster that killed 11 rig workers and spilled millions of barrels of oil into the Gulf, BP…