3rd gen vs 2nd gen blowby exit hose

[GSP7]

On my new to me 3rd gen 2005 truck, a while back when I first got it, I put a short extension on the stock blowby hose so any drips of oil would not dump on the front 4x4 differential, like a 2nd gen truck

I was lying under the truck doing something and noticed the blowby hose was still clean and dry inside. I havent driven the truck alot yet but expected to see at least some oil moister inside the hose

I know my 3rd gen has a better blowby recirculation system (well the 2nd gen has no recerulation), and my newer truck looked like the crank case breather filter on the valve cover was new when I checked it a couple months ago.

Is that standard 3rd gen dodge cummins to not have any oil moister at all exiting the blowby down tube?

 

[seafish]

Yes the 3rd gens are different from the 2nd gens. They use a simple CCV separator that drains almost all of the wet oil back into the engine and only a bit of blow by gets by when it is operating correctly.

 

[Ozymandias]

Yes, very little blow by and only a drop of oil every couple thousand miles usually.
The CCV filter is s wear part and should be replaced if there is more then just a drop of oil.

And yes it is a filter in there, you can see it in the picture, the white fabric behind the little holes.

 

[GSP7]

cool

Looks like that dried oil crud that I cleaned off of my front 4x4 differential housing when I got the truck wasnt from the blowby hose above, but a bit of a leaky pinion yoke shaft seal

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