Crude oil prices hold above $86

Renewed concerns over government debt in Europe helped weaken the euro, giving the dollar a boost.

The dollar index rose 0.63 percent to 77.03. December delivery crude oil prices, near a two-year high, hit a trading session high of $87.49 and a low of $85.96, before settling at $86.85 per barrel on the New York Mercantile Exchange.

Heating oil prices on the exchange added 1.29 cents from a prior settlement to $2.3977 per gallon. Reformulated gasoline blendstock prices added 0.017 cents to $2.18 per gallon. Natural gas prices added 18.8 cents to $4.125 per million British thermal units.

At the pump, the national average price of unleaded gasoline rose to $2.854 per gallon from Sunday's $2.848, AAA said.

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