Oil collected by Provent catch can

[dreamerman]

I have been lazy so only managed to drain the catch can after 8,894 kms (6 months) from installation. Collected 210 ml of blow-by oil. Is the volume of blow-by oil normal?

[Seigried]

Im not sure whats normal as i generally check mine every six months or so, without recording the kilometers but it usually around about the 100ml or more for the nw and less than half that on the Ns. Driving style and km will impact o how much is scavenged.

Sent from my SM-G930F using Tapatalk

[dreamerman]

Im not sure whats normal as i generally check mine every six months or so, without recording the kilometers but it usually around about the 100ml or more for the nw and less than half that on the Ns. Driving style and km will impact o how much is scavenged.

I mainly drive in the city so maybe stop-go driving generates more blow-by

[Jasonmc73]

I have been lazy so only managed to drain the catch can after 8,894 kms (6 months) from installation. Collected 210 ml of blow-by oil. Is the volume of blow-by oil normal?

The engine holds nearly 10 litres yeah?
If you are not having to add copious amounts of oil between changes & as we know it doesnt have to stay on the full mark for duration of oil change cycle, if it loses/ uses 500ml's or so per cycle big deal & the amount of blow by & oil burnt doesnt keep increasing its not an issue, in my opinion only with any engine.
I always had A belief though, the more blow by if its increasing, the thicker within reason oil I use go up A grade if using thinner oil & change more frequent, if changing at 15,000k's maybe pull back to 10,000k's etc, again just an opinion.
& A new engine can also have plenty of blow-by in its early life

Check the spec of acceptance you probably get A surprise as to what MM say is acceptable.

[Roadblock]

I drained mine first time at 5,000km oil change and got about 150mL out so your amount sounds proportional.


Sent from my SM-N976B using Tapatalk

[sharkcaver]

That's about 3 times the volume my HPD collects

[_jp_]

That's about 3 times the volume my HPD collects

Likewise, my HPD only collects about 30-40ml between 7500km oil changes.

I've got a bit of buyers remorse shelling out for the HPD and then reading the reports of it performing poorly compared to the ProVent.

[Garc]

My 2008 NS with 245K km gives 100ml after 10,000km.
Seems like this is good.

[dreamerman]

That's about 3 times the volume my HPD collects

Can I assume more blow-by collected by the catch can is better than less?

[Seigried]

More is better. But a huge amount means you might have excessive blow by. Potentially worn rings or other problems.

Sent from my SM-G930F using Tapatalk

[markc]

Likewise, my HPD only collects about 30-40ml between 7500km oil changes.

I've got a bit of buyers remorse shelling out for the HPD and then reading the reports of it performing poorly compared to the ProVent.

The pro-vent work units work well. My post pro-vent to inlet hose is dry to touch internally with absolutely no apparent oil mist etc. I get similar volumes of oil collected as reported above so appears normal to me.

[Scooby]

Has anyone plumbed the drain hose back into the sump?
I was thinking of welding a pipe or fitting into the turbo drain pipe as I haven’t seen another easy option.

I have done this with my Navara ZD30 engine which works well.
I taped a fitting into the turbo drain pipe as it had a cast block where it returns into the crankcase. I just followed the provent plumbing info and used the check valve.