Crude oil prices added 46 cents Tuesday morning to $88.60 per barrel on the New York Mercantile Exchange. Gasoline lost 1.06 cents to reach $2.7532 a gallon. Home heating oil lost 0.14 cents to hit $2.8192 a gallon. Natural gas posted an 2.2 cent gain to hit $3.139 per million British thermal units. At the pump, the national average price of unleaded gasoline rose to $3.477 per gallon from Monday\'s $3.471, AAA said.