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Vertical filters putting sludge right under bypass #4551188
10/22/17 04:55 PM
10/22/17 04:55 PM
Joined: Mar 2010
Posts: 1,406
USA
SOHCman Offline OP
SOHCman  Offline OP
Joined: Mar 2010
Posts: 1,406
USA

With most filters seemingly having the bypass at the end of the filter media, could it theoretically intake sludge that collects in the base of a vertically or relatively vertically mounted filter?

I realize clean engines probably don't collect an appreciable amount of sludge, but filters like this one posted recently show what is possible.

Cheers


I urge people not to wait 100K to change out the fluid in their transfer case units. -Kestas
Re: Vertical filters putting sludge right under bypass [Re: SOHCman] #4551210
10/22/17 05:17 PM
10/22/17 05:17 PM
Joined: Nov 2008
Posts: 3,155
Oshawa, Ontario Canada
JC1 Offline
JC1  Offline
Joined: Nov 2008
Posts: 3,155
Oshawa, Ontario Canada
What motor is that filter mounted on?


2015 Grand Caravan SXT Plus 5w-20 PPPP/Fram Ultra Filter
1997 Honda Civic CX 5w-30 Shell Conventional/Fram Ultra Filter
Re: Vertical filters putting sludge right under bypass [Re: SOHCman] #4551219
10/22/17 05:28 PM
10/22/17 05:28 PM
Joined: Aug 2004
Posts: 4,631
Katy, Republic of Texas
blupupher Offline
blupupher  Offline
Joined: Aug 2004
Posts: 4,631
Katy, Republic of Texas
Yes, that is a concern, Motorcraft filters advertise that (or at least used to) as a benefit of thread end bypass valves.


1994 Honda VT1100: Peak 15w-40/PSL/2500 mile OCI
2002 Ford F150: GTX HM 5w-20/EcoGard Syn/1yr OCI
2012 Scion xB: QSUD 0w-20/CQ Blue/5k OCI

Re: Vertical filters putting sludge right under bypass [Re: JC1] #4551220
10/22/17 05:32 PM
10/22/17 05:32 PM
Joined: Mar 2015
Posts: 10,780
In the shop
53' Stude Offline
53' Stude  Offline
Joined: Mar 2015
Posts: 10,780
In the shop
Originally Posted By: JC1
What motor is that filter mounted on?


It was on a Hyundai engine


09' Camry LE, 141,020 miles

PP 5w30 and TG 4967
Re: Vertical filters putting sludge right under bypass [Re: SOHCman] #4551228
10/22/17 05:39 PM
10/22/17 05:39 PM
Joined: Sep 2013
Posts: 10,441
Indiana
dlundblad Offline
dlundblad  Offline
Joined: Sep 2013
Posts: 10,441
Indiana
It was still there when you took the filter off so obviously it's not an issue. smile

Next oil change, race the engine when cold, turn it off and drain the oil. It'll still collect there.

Last edited by dlundblad; 10/22/17 05:39 PM.

03 Jeep WJ 4.0 200k Castrol Edge 10w40 HM Fram XG16
02 Volvo S60 2.4T 177k M1 0w40 Mahle OX149D
97 Chevy Blazer 4.3 149k Rotella T5 10w30 Supertech ST3980

Re: Vertical filters putting sludge right under bypass [Re: SOHCman] #4551250
10/22/17 05:56 PM
10/22/17 05:56 PM
Joined: Oct 2008
Posts: 12,471
The Old North State
Sayjac Offline
Sayjac  Offline
Joined: Oct 2008
Posts: 12,471
The Old North State
Yeah, that anecdote is one the uglier ones I've seen posted here. That said, best information including the pinned Jim Allen thread at the top, say bypass events are rare and when they do occur of short duration.

Some say thread end bypass in vertical dome end up filters not the best. And vice versa, dome end bypass in vertical dome end down, same. Outside of Ford many OEM have the latter design, Honda and many GM models come to mind off top of my head.

'IMO', not a huge deal either way especially in light of noted knowledge of bypass events.

Re: Vertical filters putting sludge right under bypass [Re: SOHCman] #4551414
10/22/17 08:25 PM
10/22/17 08:25 PM
Joined: Mar 2010
Posts: 1,406
USA
SOHCman Offline OP
SOHCman  Offline OP
Joined: Mar 2010
Posts: 1,406
USA
Yes, this is a recent cut and post from a Hyundai engine.

Interestingly enough, a motorcraft filter is the only filter I have cut open to find no bypass valve on the bottom.

I once thought Napa Gold (a fine fine filter by all accounts) had a thread side bypass setup, but the last one I bothered to cut open had the valve on the bottom?

Has BITOG created a list of which filters have what bypass? Thanks!


I urge people not to wait 100K to change out the fluid in their transfer case units. -Kestas
Re: Vertical filters putting sludge right under bypass [Re: SOHCman] #4551627
10/23/17 05:44 AM
10/23/17 05:44 AM
Joined: May 2007
Posts: 7,507
Indianapolis, IN
dnewton3 Offline
dnewton3  Offline
Joined: May 2007
Posts: 7,507
Indianapolis, IN
In theory, it could.
In practical application, I doubt little, if any, ever makes the trip as you inquire.

The BP valve RARELY opens in the first place, and when it does, it's for a very short duration (anywhere from a fraction of a second to only a few seconds under obscene conditions). (See Jim Allens test results).


The act of preventative maintenance, in and of itself, is FAR MORE important than brand/grade/base choices among lubes and filters.
- under maintaining something is akin to abuse/neglect; that can kill equipment by shortening the lifespan
- over maintaining something has never been proven to be anything but a waste of time and money
Re: Vertical filters putting sludge right under bypass [Re: SOHCman] #4551632
10/23/17 05:55 AM
10/23/17 05:55 AM
Joined: Dec 2002
Posts: 40,834
'Stralia
Shannow Offline
Shannow  Offline
Joined: Dec 2002
Posts: 40,834
'Stralia
Regardless of where you put the bypass, there will be some accumulation of junk in the quiescent area that will be mobilised when it opens.

Filter bypass in block even has dead headed areas.


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