Punto mk1 1995 consumes oil at 600-700km around 0,25 - 0,30 liters, I think a lot of exhaust smoke as standard (it looks like a water vapor), has excellent strength without erorr sound in engine, or I think I spent too much oil than normal I've changed the oil a month ago (Selenia Gold) set the first time around 3.7l and has since placed an additional 0.3 liters of 4 liters...
Some service man told that they should change some rubber in valve itself to solve the problem, ask someone to Council around this problem.
Thanks for every answer

Cylinder head gasket has blown. Make a compression test to confirm low pressures on 2 or more cylinders.

bluejohn125 said:

Cylinder head gasket has blown. Make a compression test to confirm low pressures on 2 or more cylinders.

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Bit quick to jump to that conclusion, if the exhaust smoke doesn't look that different its fairly unlikely, as we all know petrol engines create water vapour normally which is visible in cold weather. It could be as simple as an oil leak or a blocked oil breather (which is fairly common or a FIRE engine)