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Krankvents fixing oil consumption? #4526018
09/25/17 04:26 PM
09/25/17 04:26 PM
Joined: May 2003
Posts: 6,614
southeast US
friendly_jacek Offline OP
friendly_jacek  Offline OP
Joined: May 2003
Posts: 6,614
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?

Re: Krankvents fixing oil consumption? [Re: friendly_jacek] #4526068
09/25/17 05:26 PM
09/25/17 05:26 PM
Joined: Oct 2014
Posts: 12,597
Idaho
CT8 Online content
CT8  Online Content
Joined: Oct 2014
Posts: 12,597
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.


2015 Ford F150 2.7
2018 Ford F350 6.2
Re: Krankvents fixing oil consumption? [Re: friendly_jacek] #4526276
09/25/17 09:35 PM
09/25/17 09:35 PM
Joined: Jan 2017
Posts: 278
Iowa
Iowegian Offline
Iowegian  Offline
Joined: Jan 2017
Posts: 278
Iowa
If it worked the big auto companies would be using them.....


2011 Equinox, 2.4l
2009 Sienna, 3.5l
Re: Krankvents fixing oil consumption? [Re: friendly_jacek] #4526633
09/26/17 10:14 AM
09/26/17 10:14 AM
Joined: May 2003
Posts: 6,614
southeast US
friendly_jacek Offline OP
friendly_jacek  Offline OP
Joined: May 2003
Posts: 6,614
southeast US
I see, no experience then.

Re: Krankvents fixing oil consumption? [Re: friendly_jacek] #4526930
09/26/17 04:48 PM
09/26/17 04:48 PM
Joined: Sep 2004
Posts: 2,427
snowblind in TX
punisher Offline
punisher  Offline
Joined: Sep 2004
Posts: 2,427
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.

Re: Krankvents fixing oil consumption? [Re: friendly_jacek] #4526951
09/26/17 05:08 PM
09/26/17 05:08 PM
Joined: Aug 2004
Posts: 1,406
VA
Rhymingmechanic Offline
Rhymingmechanic  Offline
Joined: Aug 2004
Posts: 1,406
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?

Re: Krankvents fixing oil consumption? [Re: friendly_jacek] #4527301
09/27/17 05:47 AM
09/27/17 05:47 AM
Joined: May 2003
Posts: 6,614
southeast US
friendly_jacek Offline OP
friendly_jacek  Offline OP
Joined: May 2003
Posts: 6,614
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.

Re: Krankvents fixing oil consumption? [Re: friendly_jacek] #4527886
09/27/17 06:47 PM
09/27/17 06:47 PM
Joined: Jun 2011
Posts: 1,803
Crawfordville FL
SilverFusion2010 Offline
SilverFusion2010  Offline
Joined: Jun 2011
Posts: 1,803
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, 181 miles M1 HM 10w-30
Re: Krankvents fixing oil consumption? [Re: SilverFusion2010] #4528430
09/28/17 11:42 AM
09/28/17 11:42 AM
Joined: May 2003
Posts: 6,614
southeast US
friendly_jacek Offline OP
friendly_jacek  Offline OP
Joined: May 2003
Posts: 6,614
southeast US
you might be right. more pressure differential can improve ring sealing I guess.


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