The government on Thursday has increased the prices of all oil products by Rs 3 per litre except kerosene oil. Kerosene oil price has been kept at the previous level to basically protect the poor from additional financial burden, who use it as fuel. Prime Minister, Syed Yusuf Raza Gilani, excluded the kerosene oil from increase in price on the personal request of Finance Minister Ishaq Dar. The Oil and Gas Regulatory Authority (Ogra) has issued a notification of the new prices of petroleum products, to be effective from April 16.