04 T-6 67K on the clock

I try to take meticulous care of my XC and about three months ago I noticed a bit of oily residue around the boost side hard intake line-to-rubber intercooler inlet hose connection. (Near the dipstick) Idisconnected the hoses to have a look and noticed a very fine engine oil film inside the tube. I immediately thought it could only be two things:

1.) Turbo bearing failure
2.) Turbo system designed to allow small amounts of oil to pass by for lubrication.

So I took it into the dealership since I bought the extended warranty and I was told that it was just a "gunk buildup" and they cleaned the tube out and sent me on my way. Seemed to be a reasonable explanation at the time but yesterday I was under the hood changing the oil and I noticed the same residue/ minute drip coming from the intercooler outlet-to-intake manifold rubber hose connection.

There has been no performance loss, everything runs fine. Just wondering if anyone else has had that problem. I am thinking the dealer is blowing smoke... any thoughts? Any turbo systems I have ever been around and I see oil in the intake line it ususally spells bad news...

 

All turbo cars loose some oil in that area.
I haven't seen one that doesn't leak.

 

So should I just clean it up and roll with it? Just wanted to make sure there wasn't some kind of problem developing that could be caught early. Thx

 

I have to clean my turbo every oil change on both of my cars.
I change it every 3k.

 

So this is nothing out of the ordinary to be concerned with?

 

I would say no.

 

Dear Sir,

How do you clean your Turbo?

I've recently purchased a used XC90 and I perform my own maintenance.

Could you please tell me?

Thank you,
Bill