New Delhi sources have stated that Crisil Research expects the price of petrol to rise 5-8% and that of diesel by 6-8% over the next 3-4 months after last November 30’s decision by the Organization of Petroleum Exporting Countries ( OPEC) to cut crude oil production by 1.2 million barrels per day (mpbd). In Mumbai, that would mean petrol price could top Rs 75 per liter compared with Rs 72 now, and diesel more than Rs 64 compared with Rs 60 now.