Whenever you came across 'engine oil burning' issue ....... your mechanic might suggest to replace the engine with a 'kabli' one and you'll be satisfied with another 2 to 3 years at-least.
To strengthen their suggestion, they say that it's not worth spending thousands on getting new ring, piston etc etc ...
so, whatever you think might be the right option for you .... it will be costing you at-least 30k to 70k depending upon the car you're driving.
alright ............... let's say you've same kind of engine who eats oil ...
before going to get it repaired or replaced just check a tiny valve who could be equally responsible for 'oil-eating' behaviour of engine. it is called 'PCV Valve'
it can be replaced in under 1k and normally wears out in 50k to 60k engine life.
do google about pcv valve and see on youtube how people saved their thousands of rupees by just replacing PCV valve.
I did replace PCV on my 3ZZ-FE engine and results are quite impressive
I am writing this for you guys that you could save yourself from 'ignorant kind of mechanics'
see below google ref:
Good luck! (H)