Petrol prices remained unchanged while the price of diesel was slashed for a second straight day by 20 paise in Delhi and Mumbai, according to the latest notification by Oil Marketing Companies (OMCs). In Delhi, a litre of petrol still costs 101.84, whereas diesel is now cheaper by 20 paise at Rs 89.47 per litre. A litre of petrol in Mumbai remains unchanged at Rs 107.83 while