I visited PMS filling station, Miyapur for filling petril in my bike Honda Unicorn. My bike already had >1.5 Litre of petrol and tank capacity is 13L. I asked to full the tank, however I stopped them in between. so that round figure amount can be paid to them. They give me a computer generated 13.44 L and charged accordingly. Not sure, how they filled 13.44 litre ??