New Delhi, July 10 -- Oil marketing companies kept retail prices of petrol and diesel unchanged for the third consecutive day on Friday.

In Delhi, petrol is priced at Rs 80.43 a litre while diesel was a tad higher at Rs 80.78 a litre.

After keeping prices of auto fuel unchanged for previous seven days, the oil companies had increased the price of diesel by 25 paisa a litre in Delhi on Tuesday while keeping petrol prices unchanged.

Delhi is the only metro city where diesel is priced higher than petrol and this has been maintained since June 24, when for the time ever the transportation fuel price cross that of petrol.

Officials in the oil marketing companies said that diesel prices are seeing more volatility in the international market s...