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#4526018 - 09/25/17 05:26 PM Krankvents fixing oil consumption?
friendly_jacek Offline


Registered: 05/04/03
Posts: 6605
Loc: southeast US
I was googling for some out of box ideas for oil consumption and came across Krankvents in various forums:

Quote:
I use mobil 1 and I installed some Krankvents. Stopped my oil consumption almost totally. I was using about a half quart every thousand miles.


Quote:
krankvents have show some great results on vehicles that were experiencing high oil consumption, thanks for reminding us about those cool devices. I would certainly try them if my car was consuming too much oil.


i'm totally unaware of those "cool devices" and trying to learn more about it.

Anyone with any experience with them?

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#4526068 - 09/25/17 06:26 PM Re: Krankvents fixing oil consumption? [Re: friendly_jacek]
CT8 Offline


Registered: 10/09/14
Posts: 10953
Loc: Idaho
How would they reduce oil burning in a sound engine? Maybe a modified engine that has lots of blow by from high boost or RPM or loose clearances.
_________________________
"Don't let your preconceived notions get in the way of facts."
Geoff Metcalf

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#4526276 - 09/25/17 10:35 PM Re: Krankvents fixing oil consumption? [Re: friendly_jacek]
Iowegian Offline


Registered: 01/05/17
Posts: 273
Loc: Iowa
If it worked the big auto companies would be using them.....
_________________________
2011 Equinox, 2.4l
2009 Sienna, 3.5l

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#4526633 - 09/26/17 11:14 AM Re: Krankvents fixing oil consumption? [Re: friendly_jacek]
friendly_jacek Offline


Registered: 05/04/03
Posts: 6605
Loc: southeast US
I see, no experience then.

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#4526930 - 09/26/17 05:48 PM Re: Krankvents fixing oil consumption? [Re: friendly_jacek]
punisher Offline


Registered: 09/11/04
Posts: 2425
Loc: snowblind in TX
It is just a really expensive PCV system on steroids. You can get the same effect by buying an inline PCV valve and plumbing it yourself with some vac/fuel hose. Running negative crank case pressure is a good thing, but you get limited real quick running a big PCV system on a non adjustable fuel injected engine.

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#4526951 - 09/26/17 06:08 PM Re: Krankvents fixing oil consumption? [Re: friendly_jacek]
Rhymingmechanic Offline


Registered: 08/13/04
Posts: 1325
Loc: VA
I've never heard of them, but I looked them up because of your post.

Is it just me, or is their website short on information about what the product actually does? It says they're great, that lots of race engine builders use them, and they won't break. But what benefits do I get for my $99.95?

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#4527301 - 09/27/17 06:47 AM Re: Krankvents fixing oil consumption? [Re: friendly_jacek]
friendly_jacek Offline


Registered: 05/04/03
Posts: 6605
Loc: southeast US
I googled some more and found this good but long explanation how it works to maintain low crankcase pressure ("vacuum"): http://shoptalkforums.com/viewtopic.php?f=15&t=118958

However, not sure why it would affect oil consumption unless excessive crankcase pressure blows oil past main seals.

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#4527886 - 09/27/17 07:47 PM Re: Krankvents fixing oil consumption? [Re: friendly_jacek]
SilverFusion2010 Offline


Registered: 06/29/11
Posts: 1657
Loc: Crawfordville FL
Might help the oil rings. If you have suction they may scrape oil more effectively reducing consumption?
_________________________
2010 Ford Fusion SE 3.0L V6, 178k miles M1 HM 10w-30

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#4528430 - 09/28/17 12:42 PM Re: Krankvents fixing oil consumption? [Re: SilverFusion2010]
friendly_jacek Offline


Registered: 05/04/03
Posts: 6605
Loc: southeast US
you might be right. more pressure differential can improve ring sealing I guess.

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