During the last days the turbo started to make a whine/whistle noise depending on RPMs. I checked on a mechanic for that noise to be sure it's not any pulley or belts and he insisted that was the turbo but suggested to wait for that to blow over and it may last a year on that condition. The car works OK and it's responsive on high speeds too, checked at 160 km/h. Checked for codes and no problem reported. Oil level not changed.
I've opened it at home to take a look and do my checking and found some play on the axis as seen on this video: youtube-link.
So the question is, when its convenient to intervene on this case?
car: Mazda 3 diesel 1.6; turbo: Garret GT1544V