Ceylon Petroleum Corporation yesterday (14) increased prices (per litre) of Lanka Auto diesel by 50 cents, Lanka Super diesel by 50 cents, kerosene by 60 cents, industrial kerosene by 60 cents, Lanka Furnace oil (200 Sec.) by one rupee, Lanka Furnace oil (500 Sec.) by one rupee, Lanka Furnace Oil (800 Sec.) by one rupee, Lanka Furnace oil (1500 Sec.) by one rupee, Lanka Furnace oil (2000 Sec.) by 70 cents and Lanka Furnace oil (3500 Sec.) by 70 cents. But there was no change in petrol prices. CPC chairman Daham Wimalasena said that the revised prices would be effective for 30 days.