I recently bought my first new vehicle: 2016 F350 DRW.

At 3K miles (today) I pulled the stick to check the oil and I noticed a lot of vapor coming out of the tube. So I removed the cap and saw the same, LOTS of vapor for what I'd expect in a new truck.

The fill neck is slanted (I'm sure Ford did it on purpose : ) so you cannot do the "blow the cap off" trick but I don't get the impression it would blow it off.

Here's a video I took (cant get it to embed)


Knowing that rings need to be seated and such I've not babied it these first 3K miles (though it has had its share of idling at times).

What think you on whether I should see this in a new 6.7?

 

My 6.2 doesn't blow smoke like that. I wonder why a new diesel would?

 

I'm fairly certain that's normal on a modern turbodiesel. The explanation I've heard is that the rings tighten up when under boost.

Your 6.2L engine isn't built to handle 37 PSI of boost.

 

it has a turbo.. normal. when little or No boost being used.

research turbo design and piston rings. Gas or Diesel

the SHORT story.. rings will seal under turbo Boost... and relax without boost. blow-by

plus high heat from boost,

different animal when going ABOVE normal atmosphere pressure

 

That sounds logical. I didn't realize the amount of boost these diesels have.