First things first if your talking about an intercooler tube then NO there shouldn't be oil in there lol. That is oil build up from Your Crank Case vent box, which dumps oily residue back into the intake just before the turbo and it will make its way through the Intercooler tubing and back into the intake manifold's. I deleted my Crank Case vent box with less than 5000 miles on the truck to get rid of this issue. Look up Maryland Performance Diesel CCV delete or No Limit CCV delete and this will eliminate the oily residue going back into your turbo and intercooler piping.

Oh and welcome to the Forum.

 

I would like to add something I found on my truck after 160k miles of driving the EGR throttle body was COMPLETELY plugged with oil residue when my cold side intercooler pipe blew off. CCV delete kit already ordered. Cleaning the EGR housing out was a pain. My truck is deleted but it doesn't help stop the oil from plugging up everything. Thank you to DMSRACING for putting me on to the CCV deletes!

 

Like DSM said, delete CCV asap. Aint going to do you any good on the truck!

 

Going to revive this. Is this a delete that can be taken off for warranty purposes? And I'm assuming there is no tune needed for this delete? Not really looking to void my extended warranty but would like to not have my engine bay look like my 6.0 looked with the ccv.

 

Someone correct me if I'm wrong here but the only reason Ford vents the oil back into the intake is for emissions reasons? You computer wouldn't know if it was vented to atmosphere or not.

 

I'm 99% sure that's correct. Can't verify for sure since I did my CCV delete well after my DPF and EGR. I do know that sensor that plugs into the vent line, just before the lower intake attachment, doesn't look like it does anything at all. Unplugged it when I installed the CCV kit and didn't throw any type of code.