NEW DELHI: Lanka IOC, a wholly-owned subsidiary of Indian Oil Corporation, has slashed the price of fuel across Sri Lanka. It will come into effect from tonight. “The price of a litre of petrol (Octane 92) has been slashed by Rs 20 and petrol (Octane 95) by Rs 10 a litre. Auto diesel has been reduced by Rs 20 per litre and super diesel by Rs 10 a litre,’’ according to Lanka IOC.