Turbocharger 1999 S80 T6 Switch inside ?

Hello, I have a problem with one of my turbos in my S80 T6. I consume about half a liter of oil on 1000 km and the way it looks it goes through the left (if you are standing in front of the hood open) turbo, as all the pipes behind this turbo are oiled from the inside. The question is how bad is it and how likely will it get worse within about 15000 km ? I will sell the car in April (have bought it here in the USA to get to university with it) u And doesn’t necessarily want to have to plug in a new turbocharger ! A workshop where I am always meant to change oil, that one could possibly change the inside of the turbo or only the seals that seal the rotor ? Anyway he knows that it is possible with Saab, he could not tell me from Volvo … Google I also asked properly .. but I found nothing really … Do you have a suggestion or an idea how you would handle it ? Can you change something ? I’ve been driving for 1500 miles now and nothing happened.. I don’t want to stay somewhere with a shot-in-the-mill turbo on the other side either.. Maybe also take thicker oil? Drive at the moment 10W30… Thank you for your help! PS: He’s not tormented, you can’t smell anything and he’s also driving normally and has performance. Greeting Sebastian