35d: adding crankcase breather oil separator

[seattle]

Question about check valve for returning oil into dip stick: is there a particular strength (other specs?) that should be used?

Can I, please, get specs and source?

Is there some minimal distance between ProVent housing and check valve to create pressure?

I used a rather large one (good 3 inches in length!) that was locally sourced. Today, after some 100 miles, I saw ProVent housing has a pool of oil at the bottom - it was clearly not being returned.

Worse, the check valve was leaking oil that was standing in the tube.
Tube after check valve was confirmed to be completely clean and dry - oil was never there.

So, I have a valve inappropriate for the job, it seems.

On the same topic: how much pressure is coming back up into dip stick from sump pan? After removing the non-working check valve and replacing it temporarily with a catch can, I then covered the short hose that connects to the tee (the tee is attached to the dip stick, just like ZetaTre and sgrice did).

After a short drive, I observed surprisingly large amount of oil came out of that and made the undercarriage messy. Never thought there was any pressure there! Or, perhaps the tee is too close to oil line in the sump?

[Edit] Reading about oil sump pressure: a lot of topics about sump pressure (some is expected, but not much) have to do with Crank Case Ventilation malfunctioning).

Will take a better look on Monday.

[sgrice]

As ZetaTre reported in post #9, diesel-filters.com is a good supply source. The check valve can be found by using tabs to "Browse By," then "Manufacturer," then to "Mann Filter." The check valve is sku:2400843621, or a direct link is here.

I don't know how much sump pressure should be expected. The best discussion of sump pressure and check valve placement that I found is between 3:00 and 3:30 on this YouTube video. Not a whole lot of detail, but that is the best I could find.

Hope that helps.

Stephen

[seattle]

Originally Posted by sgrice

As ZetaTre reported in post #9, diesel-filters.com is a good supply source. The check valve can be found by using tabs to "Browse By," then "Manufacturer," then to "Mann Filter." The check valve is sku:2400843621, or a direct link is here.

I don't know how much sump pressure should be expected. The best discussion of sump pressure and check valve placement that I found is between 3:00 and 3:30 on this YouTube video. Not a whole lot of detail, but that is the best I could find.

Hope that helps.

Stephen

Thanks, Stephen. Placed an order on that check valve, should be here on Tuesday.