35d: adding crankcase breather oil separator

[Deftronix]

Haha, guess I was being optimistic when I read the .2 qty = 1m and the fact that the part # had 5m in it. Thanks for the clarification.

[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.

[seattle]

Update.
The check valve arrived and got installed. After >500 miles, no problems.
Opened ProVent, seeing the filter is doing its work and no puddles at the bottom.

[seattle]

Originally Posted by seattle

Update.
The check valve arrived and got installed. After >500 miles, no problems.
Opened ProVent, seeing the filter is doing its work and no puddles at the bottom.

Update at 109K miles.

Popped off charge line to look inside throttle body.
Saw about 1/3 teaspoon puddle of oil sitting in front of throttle body. A bit surprised.

Opened ProVent and observed the filter fully soaked in oil.

I thought: "good that it is catching oil, bad that it is soaked and thus not catching enough?"

Didn't have much time for looking more on Sunday morning.

Need to inspect the ProVent outlet hose. Last time I looked at it, it was slightly moist but clear.

[daytonatrbo]

Originally Posted by seattle

Update at 109K miles.

Popped off charge line to look inside throttle body.
Saw about 1/3 teaspoon puddle of oil sitting in front of throttle body. A bit surprised.

Opened ProVent and observed the filter fully soaked in oil.

I thought: "good that it is catching oil, bad that it is soaked and thus not catching enough?"

Didn't have much time for looking more on Sunday morning.

Need to inspect the ProVent outlet hose. Last time I looked at it, it was slightly moist but clear.

Since the filters are available for purchase, I wonder if it wouldn't be prudent to replace it periodically, rather than just rinse it with solvent.

[seattle]

Originally Posted by daytonatrbo

Since the filters are available for purchase, I wonder if it wouldn't be prudent to replace it periodically, rather than just rinse it with solvent.

Yes, they are replaceable and should be. I guess I didn't expect one to become soaked and thus less efficient so soon.
Will wash with solvent tonight and keep monitoring closely.
At $50 a piece, having to install new one every 2 months is a bit much

[daytonatrbo]

Originally Posted by seattle

Update at 109K miles.

Popped off charge line to look inside throttle body.
Saw about 1/3 teaspoon puddle of oil sitting in front of throttle body. A bit surprised.

Opened ProVent and observed the filter fully soaked in oil.

I thought: "good that it is catching oil, bad that it is soaked and thus not catching enough?"

Didn't have much time for looking more on Sunday morning.

Need to inspect the ProVent outlet hose. Last time I looked at it, it was slightly moist but clear.

Until we (collectively) determine how best to keep this mod working, I wouldn't be comfortable with supplying a "turn key" kit anyway.


I'm sure I could bundle a document that spells out what else needs to be purchased.

[seattle]

To support ProVent is a good idea.
Reading Diesel Technolgy document provided by user Doug Huffman

A couple places suggest that oil puddles at at oil turbo intake may lead to over-revving condition (diesel engine runaway).

Page 43

When making repairs which concern malfunctions of the crankcase ventilation system. Or, if any repairs are made to a turbocharger which has leaked oil into the engine, be sure to remove any residual oil in the intake air system.

Failure to do so may result in an engine over-rev situation causing irreparable engine damage. In this case, the warranty may be affected.

Page 93

The throttle valve also serves the additional function of effectively preventing over-revving of the engine. If the DDE detects over-revving without an increase in the injection volume, the throttle valve will close in order to limit the engine speed. This situation can occur as the result of combustible substances
entering the combustion chamber. Substances may be engine oil from an exhaust turbocharger with bearing damage.

yes, throttle body valve essentially prevents runaway should it occur, but nevertheless.

In my case, there was a puddle of blowby oil sitting right before turbo blades.