India, April 15 -- Losses on petrol have widened to INR 18 per litre and to INR 35 on diesel as state-owned fuel retailers continue to keep pump prices frozen despite a sharp rise in input costs, sources said.Despite prices being deregulated more than a decade back, state-owned Indian Oil Corporation

(IOC), Bharat Petroleum Corporation Ltd (BPCL) and Hindustan Petroleum Corporation Ltd (HPCL) have not changed the retail petrol and diesel price since April 2022. Global crude oil prices have seen sharp fluctuations over this period - from above $100 per barrel following the Russia-Ukraine war, to easing to around $70 a barrel earlier this year, before surging again to about $120 last month after the US-Israel attacks on Iran triggered fres...