File photo MANILA - After five consecutive weeks of rollbacks, prices of diesel and kerosene are set for a big-time hike on Tuesday. In separate advisories, Caltex, Cleanfuel, Seaoil, and Shell said they will increase diesel prices by PHP2.60 per liter and PHP0.70 per liter on gasoline. Caltex, Seaoil, and Shell will also raise prices of kerosene by PHP2.80 per liter. Other local oil industry players are expected to follow suit. With the price adjustments in the previous week, gasoline prices have increased since the start of the year by PHP27.40 per liter, PHP36.30 per liter for diesel, and PHP30.35 per liter for kerosene. Industry experts said the increase in petroleum prices this week is driven by a tightening of supply, with United States' crude inventory declining and the sanctions against Russia continue to impact demand and supply dynamics and affecting prices. According to OilPrice.com, the volatile oil prices have been impacting traders and other industries. "Business