ok. Good news
belts are new, change when change oil and all the filters, back 7k miles.
water thermostat and egr thermostat also changed.
I haven't changed anything else, and don't know when they are changed in past
Sometimes i think to chage water motor
and auxiliary water reservatoir
But i see no leaks on water circuit for now...
Now about oil leaks i found one vey small... this could be my problem.
Send attached one pic to show where is...
Is in that hole where a screw is attached...
And now i don't know how to close the hole!
If screw removed, that is used to attach engine cover, and motor is running, i can see a little oil smoke getting out!
Strange thing... i think the old owener used a bigger screw that he can...
To fix i think i nedd to open valve cover and close from inside... so that motor suction does not open again the hole.!
Maybe this is enought to explain my oil leak...