	usx x unit hikes  oil posted prices marathon petroleum company a subsidiary of usx corp said it lowered posted prices for  oil by cts with an effective date of october the increase brings posted prices for west texas intermediate and west texas sour to dlrs a barrel each south louisiana sweet was increased to dlrs a barrel several indepndent oil companies such as permian corp and coastal corp cgp said they had moved prices up effective last friday the day sun co sun announced a cts a barrel increase to dlrs a barrel reuter 
