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Vertical filters putting sludge right under bypass #4551188
10/22/17 03:55 PM
10/22/17 03:55 PM
Joined: Mar 2010
Posts: 1,411
USA
SOHCman Offline OP
SOHCman  Offline OP
Joined: Mar 2010
Posts: 1,411
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 04:17 PM
10/22/17 04:17 PM
Joined: Nov 2008
Posts: 3,299
Oshawa, Ontario Canada
JC1 Offline
JC1  Offline
Joined: Nov 2008
Posts: 3,299
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 04:28 PM
10/22/17 04:28 PM
Joined: Aug 2004
Posts: 4,821
Katy, Republic of Texas
blupupher Offline
blupupher  Offline
Joined: Aug 2004
Posts: 4,821
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.


2018 Hyundai Santa Fe: Dealer oil and filter/5k
2012 Scion xB: QSUD 0w-20, CQ Blue, 5k
2002 Ford F150: GTX HM 5w-20, EcoGard, 1yr
1994 Honda VT1100c: Peak 15w-40, PSL, 5k




Re: Vertical filters putting sludge right under bypass [Re: JC1] #4551220
10/22/17 04:32 PM
10/22/17 04:32 PM
Joined: Mar 2015
Posts: 11,898
In the shop
53' Stude Offline
53' Stude  Offline
Joined: Mar 2015
Posts: 11,898
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 04:39 PM
10/22/17 04:39 PM
Joined: Sep 2013
Posts: 10,691
Indiana
dlundblad Offline
dlundblad  Offline
Joined: Sep 2013
Posts: 10,691
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 04:39 PM.

03 Jeep WJ 4.0 202k Castrol Edge 10w40 HM Fram XG16
02 Volvo S60 2.4T 186k M1 0w40 Mahle OX149D
97 Chevy Blazer 4.3 153k Synpower 5w30 Supertech ST3980 (Ecore)

Re: Vertical filters putting sludge right under bypass [Re: SOHCman] #4551250
10/22/17 04:56 PM
10/22/17 04:56 PM
Joined: Oct 2008
Posts: 12,657
The Old North State
Sayjac Offline
Sayjac  Offline
Joined: Oct 2008
Posts: 12,657
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 07:25 PM
10/22/17 07:25 PM
Joined: Mar 2010
Posts: 1,411
USA
SOHCman Offline OP
SOHCman  Offline OP
Joined: Mar 2010
Posts: 1,411
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 04:44 AM
10/23/17 04:44 AM
Joined: May 2007
Posts: 7,630
Indianapolis, IN
dnewton3 Offline
dnewton3  Offline
Joined: May 2007
Posts: 7,630
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 04:55 AM
10/23/17 04:55 AM
Joined: Dec 2002
Posts: 41,577
'Stralia
Shannow Online content
Shannow  Online Content
Joined: Dec 2002
Posts: 41,577
'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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