Since i got my Charger i have gone through four turbos. The first one came with the car. I had it rebuilt by T/U and used his stock oil line. When that one went bad T/U rebuilt it again and this time i used Chris's braided steel line which he required for warrantee. When that one went bad he replaced it. I installed it and after a short period of time boost was reduced for an unknown reason. I replaced that one with a used one i got from Jackson.It lasted from the summer last year to this summer but not many miles. When i took it apart i found that it was completely worn out. Even the gas ring groove was wiped out. The turbo is on a 2.5, there is a restrictor in the block oil passage and although i dont idle the car for a bit when i finish testing the turbo has had a chance to spool down before i shut it off. Why are these turbos going bad? I can see one or two, but i just rebuild turbo # 5, What gives?