The seals ( if not mechancially damaged) will be able to be repaired as Auto-RX is very responsive to heat, that is an area that gets plenty of that ! Also the RX will clean the turbo bearing and lubricate it, the hotter the better.
Worth a try, keep in mind that if the seals are torn or severly damaged nothing will repair the seals except changing them out.
If the seal material just has high temp coking as Frank aludes to then Auto-RX may do the trick, cheaply !
Let us know how it works out.
Terry