Oil firms are set to implement a major hike in pump prices of petroleum products on Tuesday, marking the tenth straight week of upward movement for gasoline and 11th for both diesel and kerosene

In separate advisories, Chevron Philippines Inc. (Caltex) and Pilipinas Shell Petroleum Corp. said they will hike prices per liter of gasoline by P2.00, diesel by P2.50, and kerosene by P2.00.

Cleanfuel will implement the same changes, excluding kerosene which it does not carry.

The adjustment will take effect at 6 a.m. on Tuesday, September 19, except for Caltex, which will hike prices at 12:01 a.m., and Cleanfuel at 4:01 p.m. the same day.

Other firms have yet to make similar announcements for the week.