Oil climbed amid skepticism about whether OPEC and its allies can successfully raise output as much as they intend. Futures in New York rose 1.1% to $77.85 a barrel on Wednesday. OPEC+ on Tuesday stuck to its plan to add 400,000 barrels a day next month after it cut estimates for a surplus in the first quarter. However, recent history shows the group has been severely limited in how much it can boost output — adding just 90,000 barrels a day in December, according to a Bloomberg survey. “Outside of Saudi Arabia, OPEC is seeing a challenge in increasing production,” said Matt Sallee, a portfolio manager at Tortoise, a firm that manages roughly $8 billion in energy-related assets. “The more months we roll forward and OPEC is unable to demonstrate adding 400,000 barrels a day of supply, it could start to spook the market.” Adding to worries about supply […]