I have 2014 model 125 euro 2. I am third owner. And i got it at oddometer of 19000km. Now its at 29460 km.
I had the same problem. It used to eat engine oil no matter whoch company oil i used. I used Havoline, shell, liquimoly (mostly). But my good mechanic (may Allah increase his ranks in Jannat) opened half of the head in a way nobody can say it has been opened.
And fixed the problem. Ring piston bore desi lagaya kharafiyay say waghera. Now it doesn't eat even a mili liter of engine oil.
I dot know why piston starts to eat oil. But i and my good mechanic keep my bike very very well maintained.
Hope it helped.
I paid 3000. That time some 6 months ago.
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