Turbo

I have a Nissan Primstar 1.9 100cv diesel, the Saturday felt a noise like wind every time the accelerator presses, they told me it was the loose tube of the turbo. On Sunday I was lying on the AP7, the crane told me that there was no oil and that it was not broken turbo, at least that believed, and the mechanic called myself on Thursday to tell me that the turbo is broken, I taught me without disassembling and said you see this noise is that it is broken .. And I do not understand mechanics and I have to believe it. I would like to know if it can be the broken turbo? And what would it cost me to put the turbo?

Without listening to the noise, it is difficult to tell you if the turbo is broken, but in general when they are built, the combustion cameras are passed, and you lose a lot of motor power, but if the turbo is expensive, it is expensive.