Oil prices rallied today as the euro fought back from nine-month lows against the dollar.
New York's main futures contract, light sweet crude for April delivery, jumped $1.76 to $80.46 a barrel.
It hit an intra-day high of $80.62 yesterday, the highest level since mid-January, before sliding back.
Meanwhile, Brent North Sea crude for April soared $1.91 to $78.80 in late London trade.
In foreign exchange trade, the euro recovered after slumping to its lowest level in more than nine months against the dollar.
A weaker dollar tends to lift demand for dollar-priced oil because it becomes cheaper for buyers using weaker currencies.
