Turbo Oil Leak CM870

[tlzimmerman]

Just got a new to me 06 International 9900 home with a CM870 ISX. Turbo side of the engine has seen a lot of oil. Got it all washed up and let it run for awhile to start chasing down leaks, and it is leaking oil where the actuator valve goes into the turbo. It isn't a lot of oil, but drip every minute or so while at idle.

Brought up the turbo on quickserve, not seeing any O-rings or anything that can be changed out by unbolting the actuator. Is the seal there internal to the turbo and not serviceable? Anybody had this apart that can clue me in before I tear into it? Thank you in advance.

Also while I am at it, this is my first truck with a variable turbo I have ever driven. Do they sound a whole lot different than a standard turbo? Outside the truck I don't hear much difference, but while driving the truck inside I feel like there is a turbo leak when it spools up.....however I am not able to find any boost leaks as of yet.