Crude oil prices slipped in New York, losing 26 cents during the weekend to $93.30 per barrel Monday morning. Gasoline dropped 0.24 cents to $2.7373 a gallon. Home heating oil added 2.41 cents to $3.0326 a gallon. The price of natural gas added 6.3 cents to $3.39 per million British thermal units. At the pump, AAA reported the national average price for regular unleaded gasoline dropped to $3.304 per gallon from Sunday\'s $3.307.