Sometimes gaskets can start to leak if crankcase pressure isn't being vented properly. I see your truck is a 2017. Has the CCV box filter been serviced/replaced while you've owned it? May be completely unrelated, but just a thought.

 

No it has not. Do you change the entire assembly or just filter? Looks like the SRW might be different than DRW 350?

 

Only like just the filter. Apparently, an easy test is removing the oil fill cap. I'm guessing the engine should be at operating temp.

 

My CCV is not serviceable, its a sealed unit. Are you supposed to change the whole assembly at 100K or do these never get replaced?

 

I asked the question before and was told the non-servicable type does not have a change interval. I would still pull the oil cap and see if there is excessive blow by, maybe consider changing it out anyway. Over time, I would think anything with oil in it could start to get build up and lose flow.

 

I'd recommend either changing out the CCV box or deleting it and using a CCV vent kit before you start chasing other leaking gaskets. If the gasket still leaks after you replace or remove the CCV box, then at least you know you're not chasing your tail with the gasket leak repair. I ended up installing the SPE CCV Reroute kit with internal catch can and have been very pleased. https://www.spemotorsport.com/products/ccv-reroute-kit It's amazing how much oil the CCV box reintroduces to the 6.7 PSD intercooler tubing, so I'm glad that my intercooler is now breathing oil-free air as intended.

 

Sometimes castings get air bubbles when they're cast. My rear axle didn't have a crack in the casting, but it had bubbles from casting that must have had small holes for oil to seep out of. Ford had to replace entire axle. That could be what is happening here. But it looks to me like the leak is dripping down from the top and probably just a gasket issue.