PETROL DIESEL DUTY INCREASED Sunil Thenabadu 2 years ago Duty on Petrol & Diesel increased The Ceylon Petroleum Corporation announced on Tuesday (3) that the duty on Petrol and Diesel was increased. The duty on a liter of Petrol increased from Rs. 27/- to Rs. 52/-. The duty on a liter of Super Diesel increased from Rs. 13/- to Rs. 38/-