Crude oil prices retreated on Saudi Oil Minister’s assurance that there is enough supply to meet demand. Light sweet crude for March delivery fell 13 cents to $68.35 a barrel. Heating oil fell nearly 3 cents to $1.8420 a gallon. Gasoline slightly fell to $1.7974. Natural gas dropped 82 cents to $8.46. London Brent declined 55 cents to $65.88.