OIL COMPANIES will be raising this week the prices of diesel products by P1.20 per liter (/L), the biggest increase so far this year. They will also be increasing the cost of gasoline by P0.70/L. Kerosene will climb by P0.90 per liter, also the biggest rise so far this and matching the same price hike on the second week of April this year. For most of the retailers, the price hike will start at 6:00 a.m. today, July 11. The increase follows last week’s rise of P0.70/L for diesel, P0.30/L for gasoline, and P0.55 for kerosene. As in previous advisories, the oil companies said the increase reflects movements of oil prices in the international market. This month’s two straight weeks of increase follows June’s four consecutive weeks of rollbacks. — Victor V. Saulon