Islamabad:The government has announced changes to petroleum product prices effective Friday.According to Radio Pakistan, the Petroleum Division issued a press release detailing the adjustments. The price of High Speed Diesel has been reduced by 1.01 rupees, bringing it to 399.34 rupees per litre. Meanwhile, the price of petrol has been increased by 3.26 rupees, setting it at 390.66 rupees per litre.