Originally Posted by Lilpooh
Possible that the seals in the turbo leaking oil. You can disconnect the down pipe and look for oil.
If your running a custom tune, it's normal for gray smoke at start up. Some tune writers allow for extra fuel when first started.
Would this extra smoke for start also go for the Atlas 40 tune on the FICM? I noticed mine has been doing it since I got my FICM back as well. I don't run a tune program other than the atlas 40.
On that note, I notice today ( as I don't drive my truck often) I went to lunch from work backed up as I passed a empty spot, goosed it a bit and I got a puff of the bluish color smoke. Wonder if my it is time to check the turbo seals.
Sorry for the hi-jack!