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#2506579 - 01/26/12 04:53 PM New Wix filter for Subaru Applications - 23 psi's
bluesubie Offline


Registered: 08/04/03
Posts: 2082
Loc: NJ
Ok, you Honeywell haters/Framophobes. grin2 You now have a new Wix optiIon. I was browsing nasioc's Newbie forum (of all places) and came across a reply stating that there is a brand new Wix filter with the Subaru 23 psi bypass seting that wasn't even in stores yet. The person did not state their souce.

I checked Wix's site and found this pdf in the news section showing the 57712 mentioned in the nasioc reply, but no mention of bypass (bottom of list):
http://www.wixconnect.com/assets/WIX%2007-04-11%20(Revised%2001-17-2012)NOP.pdf

So I sent an email to Wix and received the following reply:
Quote:


WIX.CatalogDepartment@affiniagroup.com> wrote:

bypass valve is set at 23 lbs. of differential pressure.


Thank you for your interest in WIX Filters.

check out our website @ [url=www.wixfilters.com]www.wixfilters.com[/url]
National Hotline (800) 949-6698 Mon. 8-5,
Tues 8:45-5, W-F 8-5 (Eastern)
---------------------------------------------
Hi,

What's the bypass pressure on your new 57712 oil filter for Subaru applications?

Thanks,
Dennis


Happy hunting!
_________________________
'04 Subaru Forester 2.5XT
Mobil 1 0W-40

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#2506591 - 01/26/12 05:11 PM Re: New Wix filter for Subaru Applications - 23 psi's [Re: bluesubie]
SubLGT Offline


Registered: 01/31/06
Posts: 2172
Loc: Idaho
Cool. Do you happen to know the length and diameter? Because Wix does not show any data on their webpage for #57712


Edited by SubLGT (01/26/12 05:23 PM)

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#2506630 - 01/26/12 05:54 PM Re: New Wix filter for Subaru Applications - 23 psi's [Re: bluesubie]
bluesubie Offline


Registered: 08/04/03
Posts: 2082
Loc: NJ
D'oh! Forgot to ask. I sent another email. Maybe ut's the same as the filter it's replacing.
15208AA12A
_________________________
'04 Subaru Forester 2.5XT
Mobil 1 0W-40

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#2506700 - 01/26/12 07:05 PM Re: New Wix filter for Subaru Applications - 23 psi's [Re: bluesubie]
Rand Offline


Registered: 08/20/03
Posts: 10494
Loc: NE,Ohio
that cross references with what subaru filter?

the FB25 or the ej?
_________________________
2015 Forester I-Premium 6MT

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#2506751 - 01/26/12 08:11 PM Re: New Wix filter for Subaru Applications - 23 psi's [Re: bluesubie]
ZeeOSix Offline


Registered: 07/22/10
Posts: 12429
Loc: PNW
I don't think anyone has really found out for sure why Subaru uses/specifies such a high by-pass valve setting. Even a medium sized PureOne only produces ~5 PSID across the oil filter with 12 GPM flow of hot oil flow.

http://www.bobistheoilguy.com/forums/ubb...451#Post1619451

I can't imagine the Subaru filter or any aftermarket filter with a 23 PSI bypass setting running anywhere close to 23 PSID during normal operation.

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#2506798 - 01/26/12 08:44 PM Re: New Wix filter for Subaru Applications - 23 psi's [Re: bluesubie]
edhackett Offline


Registered: 06/09/03
Posts: 1772
Loc: Sequim, WA
Possibly to limit by-pass when cold. The pump by-pass is 100-105 psi for the turbo engines. Subaru engines move a lot of oil.

Ed
_________________________
Never attribute to engineers that into which politicians, lawyers, accountants, and marketeers have poked their fingers.

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#2506994 - 01/27/12 01:55 AM Re: New Wix filter for Subaru Applications - 23 psi's [Re: bluesubie]
mount Offline


Registered: 12/07/11
Posts: 255
Loc: North Dakota
Also should have asked if it has an Anti-Drainback Valve. If it does, I'm going to need a new keyboard thumbsup
_________________________
01 Passat 2.8 4Mo 0W-40 115k
12 Legacy 2.5i 5W-30 60k
04 Town Car 0W-20 150k
2x 97 F-150 0W-20 5.4 210k, 4.6 100k

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#2506997 - 01/27/12 02:09 AM Re: New Wix filter for Subaru Applications - 23 psi's [Re: edhackett]
ZeeOSix Offline


Registered: 07/22/10
Posts: 12429
Loc: PNW
Originally Posted By: edhackett
Possibly to limit by-pass when cold. The pump by-pass is 100-105 psi for the turbo engines. Subaru engines move a lot of oil.

Ed


That's a good theory ... and I doubt the PSID with hot oil isn't anywhere near the 23 PSI of the bypass valve setting.

Cold oil, maybe ... but when the oil is cold the pump will hit pressure 100~105 PSI relief with much less oil flow output, which also helps keep the PSID across the filter in check with cold oil.

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#2507448 - 01/27/12 01:56 PM Re: New Wix filter for Subaru Applications - 23 psi's [Re: bluesubie]
bluesubie Offline


Registered: 08/04/03
Posts: 2082
Loc: NJ
Height is 2.577. Is diameter "O.D."? That's 2.685.
Flow rate is 9-11 GPM's.

-Dennis
_________________________
'04 Subaru Forester 2.5XT
Mobil 1 0W-40

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#2507490 - 01/27/12 02:35 PM Re: New Wix filter for Subaru Applications - 23 psi's [Re: bluesubie]
subiedriver Offline


Registered: 06/04/10
Posts: 517
Loc: Colorado
I used a Fram tough guard one time on my Subie, until I realized it was junk. I then used a P1 for a couple of oil changes and now I've settled on the M1 filters with the oil change specials that happen once every few months.
_________________________
2004 Subaru Legacy 4 door, 2.5, 140,000 miles
Always Mobil 1, since I bought it at 80,000 miles.
30 mpg

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#2507660 - 01/27/12 05:17 PM Re: New Wix filter for Subaru Applications - 23 psi's [Re: bluesubie]
SubLGT Offline


Registered: 01/31/06
Posts: 2172
Loc: Idaho
Originally Posted By: bluesubie
Height is 2.577. Is diameter "O.D."? That's 2.685.
Flow rate is 9-11 GPM's.

-Dennis


Thanks. Those dimensions are the same as I measure on the Tokyo Roki ....A100 filters.

Subaru says the oil pump in the 2.5L turbo motor can put out 12.4 gal/min, or more, at 5000rpm and 176 degF. Will the Wix filter go into bypass at >5000rpm, because of its 11 gpm limit?

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#2507662 - 01/27/12 05:19 PM Re: New Wix filter for Subaru Applications - 23 psi's [Re: edhackett]
SubLGT Offline


Registered: 01/31/06
Posts: 2172
Loc: Idaho
Originally Posted By: edhackett
Possibly to limit by-pass when cold. The pump by-pass is 100-105 psi for the turbo engines. Subaru engines move a lot of oil.

Ed


In my FSM, the pump bypass is listed as 85psi, for the 2.5L turbo motor.

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#2507774 - 01/27/12 06:48 PM Re: New Wix filter for Subaru Applications - 23 psi's [Re: SubLGT]
ZeeOSix Offline


Registered: 07/22/10
Posts: 12429
Loc: PNW
Originally Posted By: SubLGT
Subaru says the oil pump in the 2.5L turbo motor can put out 12.4 gal/min, or more, at 5000rpm and 176 degF. Will the Wix filter go into bypass at >5000rpm, because of its 11 gpm limit?


I'm wondering if that 12 GPM at 5000 RPM with 176 deg F oil is actually what the engine & filter is flowing, or if that's a raw volumetric output of the oil pump with no restriction provided by the engine + filter oiling system (?).

Even is there was 12 GPM of oil at 176 deg F going through a medium sized filter, I wouldn't expect more than ~8-10 PSI pressure drop across the filter, since a PureOne shows ~5 PSID with 212 deg F oil.

http://www.bobistheoilguy.com/forums/ubb...451#Post1619451

I really don't know what the "11 GPM limit" really means on the WIX filter. Could be it means the PSID is getting close to the bypass valve opening pressure setting.

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#2507778 - 01/27/12 06:51 PM Re: New Wix filter for Subaru Applications - 23 psi's [Re: SubLGT]
ZeeOSix Offline


Registered: 07/22/10
Posts: 12429
Loc: PNW
Originally Posted By: SubLGT
In my FSM, the pump bypass is listed as 85psi, for the 2.5L turbo motor.


So that might mean the engine will flow this 12.4 GPM at 5000 RPM with 176 deg F oil when the oil pump is maxed out at 85 PSI (ie, in pressure relief mode).

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#2507800 - 01/27/12 07:12 PM Re: New Wix filter for Subaru Applications - 23 psi's [Re: bluesubie]
edhackett Offline


Registered: 06/09/03
Posts: 1772
Loc: Sequim, WA
Ah, the 100 psi was correct for the 2.0L. I saw that in print somewhere and is exactly what I saw on the gauge in my 2003 WRX.

Ed
_________________________
Never attribute to engineers that into which politicians, lawyers, accountants, and marketeers have poked their fingers.

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