Excessive blow by on Cummins 8.9 isl ?

I just bought a truck with a 2018 Cummins ISL 8.9. It has 9000 hours on the engine and I originally thought the engine was healthy but now I’m concerned I have excessive blow by. I have no other symptoms or power loss. Truck works fine. I’m just trying to decide how much life I have before I need a rebuild. I’ll only use it for a 20 to 30 hours a month. Attached is a video. Do the 8.9 ISL tend to have a bit more blow by ? Since the oil fill cap is on the top of the valve cover it seems like blow by appears worse than other engines where the oil fill is mounted on the side of the engine? When the cap is inserted un threaded into the hole, it dances quite a bit, but for some reason, actually stops dancing in the hole at high idle. I do have visible white puffs of what appear to be vapor that disappears very quickly that may or may not be visible on the video. I realize there is definitely blow by, I just want to know if it appears to be excessive. Thanks!

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Ok great thanks for the reply. I didn’t know there is a crankcase pressure sensor. That gives me some confidence.

When I change the CCV filter can I take pressure reading off the CCV port with a manometer just as a baseline ?

 

I really appreciate the advice. I’m not familiar with the road draft tube. Any advice how to locate that ?
From what I read , I need to be under 3” h20 on the manometer ?

 

Great. Will do! Thanks again for the advice!