Oil prices settled mixed Tuesday on weaker dollar and lingering concerns about global oil producers'commitment to an output cut deal.

The West Texas Intermediate for February Delivery added 0.11 dollars to settle at 52.48 dollars a barrel on the New York Mercantile Exchange, while Brent crude for March delivery erased 0.39 dollars to close at 55.47 dollars a barrel on the London ICE Futures Exchange.