How to solve the high speed oil reduction problem in bajaj pulser150..??

hello myself suraj. I have a bike "Bajaj pulsar 150 DTS-i" in very good condition but from last 2-3 month I am facing the oil decrement problem. When I ride my bike above 250 km Problem arises it decrease the level of engine oil. The time when I go through the service I had asked to the mechanic about this issue, he told me to replace the bore-piston kit and I did but the problem remain same even after the bore change. Now I want a solution of this issue please help me if anyone know..

Hi Dear Suraj..

brother you just said that whenever you ride above 250kmph, is it correct what I am seeing ? I thought Pulsar 150 can't go above 120 kmph or something near ?

If you bike can cross 250 kmph then I think let it eat oil, just top-up whenever its low.. I would love to ride this bike which crosses 250 km per hour speed..

Please confirm if its really true.. !