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#3247605 - 01/13/14 10:12 PM 23psi bpv oil filter for WRX?
94exa2 Offline


Registered: 04/06/11
Posts: 54
Loc: nc
Hey guys, I have done some reading, and it seems that my car (05Wrx) or most Subaru's in general "need" an oil filter with a 23psi bypass valve in it, due to the relatively high volume and pressure of the oem Subaru oil system.

From the research I have done, it seems almost all major oil filter manufacturers (Wix, Bosch, Mobil1, K&N, Fram etc) offer us filters with 8-12 psi bypass valves, meaning oil would bypass the filter most of the time.

Supposedly Purolator makes a filter for us with 16 or 18 psi bypass valve, I believe.

It seems like the "older" "black" oem Subaru filters were of better quality than the newer "blue" oem filters (made by Honeywell...Fram?) But seems impossible to find.

Are there any good non-oem oil filters that offer 20-23 psi bypass valves in them?
Anyone know where to find the black Subaru filters?

I have read that 09? and newer Mazda Rx8's used the same filter as the earlier black Subaru filters, just with Mazda on it. I also read '12? and new H6 Subarus do as well. But I have no Idea.

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#3247613 - 01/13/14 10:19 PM Re: 23psi bpv oil filter for WRX? [Re: 94exa2]
sjstangman Offline


Registered: 12/08/11
Posts: 118
Loc: Southern Jersey
PL14460

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#3247649 - 01/13/14 11:17 PM Re: 23psi bpv oil filter for WRX? [Re: 94exa2]
94exa2 Offline


Registered: 04/06/11
Posts: 54
Loc: nc
Purolator says its 14-18 Psi with anti drain back valve.

I want one with 23 psi and Im pretty sure the adb valve is pointless the way the filter is mounted.

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#3247668 - 01/13/14 11:44 PM Re: 23psi bpv oil filter for WRX? [Re: 94exa2]
94exa2 Offline


Registered: 04/06/11
Posts: 54
Loc: nc
K&N says 11-17 for their hp1008.
Seems to be same for M1108 and others.


I have read a bunch of people saying the blue Fram Subaru filters seem to leak at the gasket, and have very thin, weak canisters with [censored] filter material. But, has correct 23psi bpv.
I have read a bunch that the earlier black Tokyo Roki? filters are stronger, have better filter media and higher quality overall but were replaced with the blue Fram.

But, I have read that new Subaru's are using Tokyo Roki? filters, but, I have no confirmation if they do, or if the are right for my engine. Which I would love to know. I would also love to know if any retailer has 6 or 12 TR black Subaru filters.

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#3247671 - 01/13/14 11:50 PM Re: 23psi bpv oil filter for WRX? [Re: 94exa2]
tenderloin Offline


Registered: 12/16/02
Posts: 5984
Loc: Huntington Beach, CA
http://www.wixfilters.com/Lookup/PartDetails.aspx?Part=57712

http://www.framcatalog.com/PartDetailWindow.aspx?b=F&pn=PH9715

Concerning the "blue" filters Fram did have a very small recall on them. I have been using them on my sons Impreza with no problems at all.

http://www.fram.com/media/20698/recall_notice_02052013_for_distribution.pdf

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#3247702 - 01/14/14 12:45 AM Re: 23psi bpv oil filter for WRX? [Re: 94exa2]
94exa2 Offline


Registered: 04/06/11
Posts: 54
Loc: nc
Yeah I did read about the recall on the blue filter. As well as quite a few reviews about them leaking, and having poor filter element and weak/cheap construction.

I really REALLY wish I could find 12 oem Subaru Tokyo Roki oil filters.

Or knew much more about the Rx8 TR and newer Subaru H6 TR filters. I have read that they thread on just fine and have the 23 psi bpv, but don't know if "bigger" means longer, or larger diameter making it really close to the exhaust manifold.

Also read Subaru BRZ has Tokyo Roki filters that should fit.


Edited by 94exa2 (01/14/14 12:53 AM)

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#3247704 - 01/14/14 12:56 AM Re: 23psi bpv oil filter for WRX? [Re: 94exa2]
rrounds Offline


Registered: 07/05/07
Posts: 413
Loc: SACRAMENTO, CA
The pressure that the oil pump puts out has nothing to do with PSID(bypass). My S2000 runs 85+ oil pressure going down the freeway and I run a 14 lbs bypass filter. My motorcycle runs over 100 lbs of oil pressure and its filter has 10 or 12 lbs bypass filter.

ROD
_________________________
'06 S2000
'00 SSEi
'99 Ford F150 4X4

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#3247706 - 01/14/14 01:17 AM Re: 23psi bpv oil filter for WRX? [Re: 94exa2]
tenderloin Offline


Registered: 12/16/02
Posts: 5984
Loc: Huntington Beach, CA
Why not the Wix 57712? You can buy a dozen for about $5+ a piece delivered Meets the specs you are looking for and are top filters

By-Pass Valve Setting-PSI: 23
Anti-Drain Back Valve: Yes
Beta Ratio: 2/20=2/20
Burst Pressure-PSI: 300
Max Flow Rate: 9-11 GPM
Nominal Micron Rating: 21

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#3247707 - 01/14/14 01:17 AM Re: 23psi bpv oil filter for WRX? [Re: 94exa2]
94exa2 Offline


Registered: 04/06/11
Posts: 54
Loc: nc
There is a reason Subaru specifically spec'd their filters to 23psi instead of 8-14 like most oil filters. I do not want to be driving around with my oil bypassing the filter because I bought the wrong filter. I am looking for a good (better than oem Fram) oil filter with 23 psi bypass valve.

My first choice is the old 15208aa100 Subaru Tokyo Roki, but I cant find those anymore.

I would like information on the oem Rx8 To Ro filter, Subaru H6 To Ro filter, and Subaru Brz To Ro filter, pertaining to my 05 Wrx.


Edited by 94exa2 (01/14/14 01:17 AM)

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#3247708 - 01/14/14 01:45 AM Re: 23psi bpv oil filter for WRX? [Re: 94exa2]
ZeeOSix Offline


Registered: 07/22/10
Posts: 6742
Loc: PNW
Originally Posted By: 94exa2
Purolator says its 14-18 Psi with anti drain back valve.

I want one with 23 psi and Im pretty sure the adb valve is pointless the way the filter is mounted.


If Purolator specs that oil filter for that engine, then they have taken into consideration the performance characteristics of the oiling system ... ie, the oil viscosity used and the max flow volume of that engine to determine what the expected max delta-P is across their filter with loading factors included. All of that is used to determine what the by-pass valve should be set at.

If you compare every oil filter that is specified for that engine, they will not all have a 23 PSI by-pass valve like the Subaru OEM. That's because the design of the filter itself is also a factor on where the by-pass valve is set - ie, how the filter flows, how much media and what type of media is has.

If you are paranoid that an aftermarket filter maker didn't design their oil filter correctly that is specified for that engine, then stay with the OEM filter.

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#3247712 - 01/14/14 02:24 AM Re: 23psi bpv oil filter for WRX? [Re: 94exa2]
901Memphis Offline


Registered: 08/14/10
Posts: 4916
Loc: Northern Kentucky
Wix is what you want. It's been discussed here before. Tenderloin already beat me to it. It's one of your best choices.
_________________________
1999 Ford Taurus 145k (Vulcan v6) - Mobil 1 High Mileage 5w30 | FL400S
2002 Buick Century 102k - PU 5w30 / Fram Ultra XG 3980 / Filter mag

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#3247717 - 01/14/14 02:36 AM Re: 23psi bpv oil filter for WRX? [Re: 94exa2]
94exa2 Offline


Registered: 04/06/11
Posts: 54
Loc: nc
The little Wix? I guess I could get them a try if all else fails.

If I can find a case of the older oem Subaru Tokyo Roki oil filter I would buy those. If the Rx8 Tokyo Roki filter is the same as the one that used to be for the Wrx with 23psi I might go that route. If there are any other Subaru's that use oem Tokyo Roki filters that are suitable for my Wrx, I might got that route.

I just really want to stay with 23 psi as per Subaru.
And always hear/read oem To Ro is much better than oem Fram.
And heard/read those are the only two options with 23psi.
Until now, I guess Wix finally wised up and made one as well.
Honestly don't know why it's hard to find the correct one, other than the $5 cardboard Fram. (Mobil, Purolator, K&N, etc should, since there does seem to be a demand for them)

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#3247779 - 01/14/14 06:35 AM Re: 23psi bpv oil filter for WRX? [Re: 94exa2]
901Memphis Offline


Registered: 08/14/10
Posts: 4916
Loc: Northern Kentucky
Maybe this thread will be of help, but i didn't ready all of it.

Previous Wix Thread
http://www.bobistheoilguy.com/forums/ubbthreads.php?ubb=showflat&Number=2506579&page=all


Also this thread has a chart in it with PSID

http://forums.nasioc.com/forums/showthread.php?t=2301839&page=2
_________________________
1999 Ford Taurus 145k (Vulcan v6) - Mobil 1 High Mileage 5w30 | FL400S
2002 Buick Century 102k - PU 5w30 / Fram Ultra XG 3980 / Filter mag

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#3247939 - 01/14/14 10:07 AM Re: 23psi bpv oil filter for WRX? [Re: 94exa2]
tenderloin Offline


Registered: 12/16/02
Posts: 5984
Loc: Huntington Beach, CA
Originally Posted By: 94exa2
The little Wix? I guess I could get them a try if all else fails

)


Not sure why the "little" Wix comment? If you are describing the diameter, I was told the filter was spec 'd smaller because where it sits. On our 07, it is completely surrounded by exhaust pipe. You literally fit your hand/wrench in between almost a circle of pipe. The larger diameter filters were too close to the exhaust, heating up the filter/oil so Subaru went to a smaller diameter filter rather than the trouble of moving where the filter is located.

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#3247981 - 01/14/14 10:46 AM Re: 23psi bpv oil filter for WRX? [Re: 94exa2]
sjstangman Offline


Registered: 12/08/11
Posts: 118
Loc: Southern Jersey
Originally Posted By: 94exa2
Purolator says its 14-18 Psi with anti drain back valve.

I want one with 23 psi and Im pretty sure the adb valve is pointless the way the filter is mounted.


My link says 20-25 without the valve:
http://www.purolatorautofilters.net/resources/Popup/Pages/PartDetailPopup.aspx?partnum=pl14460

Where did you get your info?

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