CALTEX TO RAISE BAHRAIN OIL PRODUCT PRICES Caltex Petroleum Corp said it will raise posted prices for naphtha and several grades of residual fuel in Bahrain, effective March 25. Caltex, a joint venture of Chevron Corp <CHV> and Texaco INC <TX>, said its naphtha posting is up four cts a gallon to 43 cts. It said it is raising its marine diesel oil posting by 30 cts a barrel to 20.24 dlrs a barrel. Light, medium, and heavy fuel oil postings are up 1.50 dlrs a barrel, the company said. This will bring the light fuel oil price to 16.90 dlrs, medium to 15.50 dlrs, and heavy to 14.60 dlrs, the company said.