MANILA — Petron and Shell increased the price of their gasoline products by 10-30 centavos per liter effective Tuesday, June 3, at 6 am. Prices, however, of their kerosene and diesel products were rolled back. The latest price adjustments reflected the movements in the international oil markets. Shell’s kerosene per liter was slashed by 20 centavos but Petron had a lower rollback of only 10 centavos. Both companies’ diesel products were rolled back by 10 […]