Crude oil lost 49 cents in trading on the New York Mercantile Exchange Friday, closing at $92.87 a barrel. Natural gas prices ended Friday off 17 cents to $2.77 per million British thermal units. Home heating oil was off 2 cents to close at $3.02 a gallon. Reformulated blendstock gasoline picked up less than a cent to settle at $3 a gallon. At the pump, the average price for a gallon of regular unleaded gasoline was $3.673 Friday from $3.662 Thursday, AAA reported