Indian Oil Corporation provides a city-wise price list for various fuels on a daily basis. Prices of non-branded petrol, applicable from 6:00 am on June 22, 2018, were Rs 76.02 per litre in Delhi, Rs 78.70 per litre in Kolkata, Rs 83.74 per litre in Mumbai and Rs 78.89 per litre in Chennai.
On June 21, 2018, the prices of petrol stood at Rs 76.16 per litre in Delhi, Rs 78.83 per litre in Kolkata, Rs 83.92 per litre in Mumbai, and Rs 79.04 per litre in Chennai.
Prices of non-branded petrol across state capitals (Rs/litre), applicable from 6:00 am on June 22, 2018:
Prices of non-branded diesel, applicable from 6:00 am on June 22, 2018, in metro-cities were Rs 67.68 per litre in Delhi, Rs 70.23 per litre in Kolkata, Rs 71.99 per litre in Mumbai, and Rs 71.44 per litre in Chennai.
On June 21, 2018, the prices of diesel stood at Rs 67.68 per litre in Delhi, Rs 70.23 per litre in Kolkata, Rs 71.99 per litre in Mumbai, Rs 71.44 per litre in Chennai.
Oil prices rose by more than 1 percent in early Asian trading on Friday, pushed up by uncertainty over whether OPEC would manage to agree a production increase at a meeting in Vienna later in the day. The Organization of the Petroleum Exporting Countries (OPEC), a producer cartel de-facto led by top exporter Saudi Arabia, is meeting together with some non-OPEC members, including top producer Russia, at its headquarters in the Austrian capital to discuss output policy.
The group started withholding supply in 2017 to prop up prices. Amid strong demand, the market has since tightened significantly, pushing up crude prices and triggering calls by consumers to increase supplies. Saudi Arabia and Russia are in favour of raising output. Other OPEC-members, including Iran, have opposed this, resulting in a flurry of backdoor diplomacy ahead of the meeting, which starts on Friday.
 "Petrol Pump, Daily Fuel Revision")