Minimum oil level

Good night to everyone

I have a problem with my car (Hyundai Accent 2003)

happens that I have noticed a month ago the very low oil level of the car I reviewed it in the morning and the measurement rod indicates the minimum level. I made an oil change and after a week I review again and is worse below the minimum level,

to what is this problem?

It is possible to say that it is not shedding oil through the carter or anywhere else of the engine because I have checked in detail, nor is it pulling a lot of smoke by the exhaust,

I would appreciate them will help me because the truth I do not want to open the engine and it smells like it goes there ....

Thank you and happy new year

Change only valve seals will love you quite a lot depends on km. That you have for the rings or a good warm before the seals of these cars come out as a stick. I hope it serves what has already been seen. Good luck friend