MAJOR oil firms has announced they will be increasing their pump prices today this is due to the reflecting changes in international market prices. In separate advisories, Pilipinas Shell Petroleum Corp. and Phoenix Petroleum Philippines said they will increase diesel prices by P1.35 per liter and gasoline prices by P1.50 per liter at 6:00 a.m., May 3. Shell will also hike kerosene prices by P1.40 per liter. Meanwhile, other major oil players here in the Philippines are expected to do the same. pna