Blue smoke at startup

[82332]

I searched this site pretty thourgh for my truck issue. First, was the oil leak which I though was a seal, but it is the pedestal. But my concern now, is the blue smoke at startup. If the truck sits for a few days, there is more blue smoke until it is burned off (more the longer it sits, just a puff is set for 8 hours). It could be turbo seals (or worse?). I pulled the air intake off and check the turbo for end and side play, but it seems pretty tight and smooth, no wiggle. My question, can the turbo seals be leaking and not have end play? I want to fix the pedestal oil leak, but while doing so, replace or repair the turbo. This problem started about 3 months ago, and the oil burning and leak seem to coincide. I have 160k on the truck, '02, 7.3L, auto, mostly stock, except for K&N cold air filter, and Amsoil dual by-pass oil filters.
Also, I have light oil in the intake, most likely from the CCV. There was a tiny pool of oil (4-5 drops worth) just before the turbo vanes. That doesn't seem to be enough to cause that amount of blue smoke.
No blue or white smoke after warm up.
Thanks, Sam

[Deeslfxr]

A couple minutes of blue smoke is normal for cold start in cool weather. If you're concerned about turbo seals, pull intake tubes apart between turbo and IC, and between IC and intake and look for excessive oil residue. And yes, turbo seals can go out without excessive shaft play.

[82332]

Thanks Deeslfxr, I'll take a look btwn the IC and Turbo for excessive residue. If find that, what does it mean?
Thanks.

[CanadianDiesel]

My 99 (172k) is doing the same thing...Figured it's normal for diesels with near freezing nights?

[82332]

CanadianDiesel
I've had some blue smoke on startups during the winter ever since I've owned the truck, but this winter it seems to be worse. I switched to a lighter oil last summer. I've used Amsoil 15w-40 since '04, then I went to 5w-40 Premium API CJ-4. I got a couple miles more per gallon and starts really nice at -20 F (without being plugged in). I am wondering if that lighter oil is the problem, or it caused a problem in my turbo. This oil is suppose to be "backwards compatible" for pre-2007 engines. However, the excessive (to me) smoke has started more recently, last couple months. Which coincides with the excessive oil leak, which I have determined was the Pedestal o-rings (thanks to this website).
Thanks