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#4528989 - 09/29/17 03:03 AM Center tube of oil filters
BlueOval83 Offline


Registered: 09/25/17
Posts: 13
Loc: USA
Hi guys. Iíve been hearing a lot of things around the forums about the center tubes of oil filters and the small openings in them. Iíve heard how louvered center tubes are bad in oil filters and how non louvered center tubes are a lot better. My question is why are non louvered center tubes better then louvered ones? Iíve seen several brands that run louvered center tubes and havenít noticed any issues. Iíve seen them in amsoil, baldwin, hastings, purolater, royal purple and a few other brands. I really only see the non louvered ones on fram and wix. Why is that? Why would companies switch to louvered if they are so bad?
_________________________
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#4528993 - 09/29/17 03:26 AM Re: Center tube of oil filters [Re: BlueOval83]
Colt45ws Offline


Registered: 08/15/06
Posts: 9647
Loc: Central Washington
poppycock perpetrated by knowitalls. Dont worry about it.
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2002 Ford Crown Vic PI 207k, Ex-Kootenai County, ID Unit #42
Down for engine swap
2003 Ford Crown Vic PI 75k
Castrol EDGE HM 5W30, Fram XG2

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#4529005 - 09/29/17 04:23 AM Re: Center tube of oil filters [Re: BlueOval83]
ZeeOSix Offline


Registered: 07/22/10
Posts: 17781
Loc: PNW
Louvers are fine IF they are opened up correctly. There have neen lots of photos posted of louvers that were barely cracked open, which could restrict flow. Always inspect filters with louvers to ensure they are opened a decent amount. Forming louvers shouldn't be rocket science, but seems it is for a few companies.

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#4529054 - 09/29/17 06:30 AM Re: Center tube of oil filters [Re: ZeeOSix]
Dallas69 Offline


Registered: 02/11/14
Posts: 1664
Loc: Texas
I think louvers are easier to manufacture than punching a hole.
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#4529059 - 09/29/17 06:38 AM Re: Center tube of oil filters [Re: Dallas69]
4WD Online   confused


Registered: 09/21/10
Posts: 6395
Loc: Texas
Seems it would produce less debris in the machine doing the perforations - and these "donut holes" drifting everywhere you don't want them to be ...

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#4529078 - 09/29/17 07:02 AM Re: Center tube of oil filters [Re: BlueOval83]
Eddie Offline


Registered: 12/07/03
Posts: 9569
Loc: Florida, Cape Coral
+1 on the donut holes which is another manufacturing step that can cause issues. Ed
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#4529097 - 09/29/17 07:29 AM Re: Center tube of oil filters [Re: BlueOval83]
Sayjac Offline


Registered: 10/13/08
Posts: 12268
Loc: The Old North State
I too would think louvered centertubes are less expensive to produce. Baldwin/Hastings been doing louvers right for some time.

And unfortunately in past, false or mis-information has been posted about the louvered center tube design on this sub forum. Fortunately now, in my observation that has become much less prevalent.

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#4529118 - 09/29/17 08:03 AM Re: Center tube of oil filters [Re: Colt45ws]
HangFire Offline


Registered: 08/21/13
Posts: 2506
Loc: Central Maryland
Originally Posted By: Colt45ws
poppycock perpetrated by knowitalls. Dont worry about it.

This.
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#4529271 - 09/29/17 10:24 AM Re: Center tube of oil filters [Re: BlueOval83]
Kuato Offline


Registered: 10/23/05
Posts: 7094
Loc: Colorado
Definitely easier to manufacture, and slows flow to reduce pressure on the media maybe?
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#4529284 - 09/29/17 10:35 AM Re: Center tube of oil filters [Re: Dallas69]
ZeeOSix Offline


Registered: 07/22/10
Posts: 17781
Loc: PNW
Originally Posted By: Dallas69
I think louvers are easier to manufacture than punching a hole.

It seems forming metal to the correct shape is harder than punching out holes for some filter makers. And manufacturing consistency can vary from the same maker, call it bad QA. I'll post some example pix later.

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#4529356 - 09/29/17 11:59 AM Re: Center tube of oil filters [Re: BlueOval83]
ARCOgraphite Offline


Registered: 05/17/09
Posts: 11970
Loc: N.H, U.S.A.
Then you have these Nissan OEM filters with NO room for oil to move around the end cap to get to the filter. This "design" Blew my new engine on my new versa note 3 years ago. Nice Jobs beancuter ding bats - and the engineer that signed off ( his/her had was likely FORCED by Mgmt).

Now I run the M1 Ep 110A

!NO Hay Problema!

_________________________
2014 Nissan Rogue S CVT, OC#9 41392mi-QSUD10W30 + M110A CHAMP Filter; 2017 Subaru Crosstrek CVT OC#2 ?? mi-SOA/Idemitsu 0w20 + SOA Filter

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#4529429 - 09/29/17 01:39 PM Re: Center tube of oil filters [Re: BlueOval83]
ZeeOSix Offline


Registered: 07/22/10
Posts: 17781
Loc: PNW
Always inspect the louvers to make sure they are opened up a decent amount. I've seen quite a few with nearly closed louvers as shown below.

Good Louvers






Bad Louvers



These louvers aren't even opened up ... they are just "bumps".





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#4529445 - 09/29/17 02:09 PM Re: Center tube of oil filters [Re: BlueOval83]
gaijinnv Offline


Registered: 02/14/13
Posts: 418
Loc: Nevada, USA
All this discussion of louvers gives me more confidence in the Toyota TRD filters I use:





HTH
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#4529454 - 09/29/17 02:21 PM Re: Center tube of oil filters [Re: ZeeOSix]
BlueOval83 Offline


Registered: 09/25/17
Posts: 13
Loc: USA
ZeeOSix, what filter is that with the good louvers?
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#4529553 - 09/29/17 04:27 PM Re: Center tube of oil filters [Re: BlueOval83]
ZeeOSix Offline


Registered: 07/22/10
Posts: 17781
Loc: PNW
Originally Posted By: BlueOval83
ZeeOSix, what filter is that with the good louvers?


Not sure ... those photos were posted in this forum and I saved them for examples of good vs bad louvers.

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