At the National Commodity and Derivatives Exchange, refined soya oil for delivery in March added Rs 6.55, or 0.95 per cent, to Rs 694.50 per 10 kg with an open interest of 99,410 lots.
Similarly, the oil for delivery in February gained Rs 5.85, or 0.85 per cent, to Rs 697 per 10 kg in 7,940 lots.
Market analysts said pick-up in demand in the spot market driven by ongoing wedding season mainly helped refined soya oil prices to rise for the second day at futures trade.