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#3174971 - 11/01/13 11:41 AM Re: Filter Bypass psi/Mazda replacment for Subaru [Re: ZeeOSix]
stenerson Offline


Registered: 08/26/09
Posts: 665
Loc: NH
I was gonna post question about filter for my new used 2005 outback. (it has new motor) Did a search and got this interesting thread. Good to know about this psi spec. I get the oem filters for about 6 bucks with washer, I guess I'll stick with that.
_________________________
2004 Dodge Ram 1500 SLT 4x4 5.7 Hemi 221k miles
2005 suburu outback 151k
2007 Hyundai Sonata 115K

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#3259273 - 01/25/14 06:31 AM Re: Filter Bypass psi/Mazda replacment for Subaru [Re: LoneRanger]
Izb Offline


Registered: 07/02/08
Posts: 301
Loc: London, UK
I am afraid, that a lot of previous media (using by Purolator, Champ, Fram, Mobil, Amsoil, RP) ... can be destroyed under high pressure like 23-28 psi...

And this is the main reason of existing only few filters with high settings of bypass valve...

p.s.
For example, why Pure One PL14615 (announced 3 years ago!) is not in the market since then?


Edited by Izb (01/25/14 06:35 AM)

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#3259756 - 01/25/14 03:24 PM Re: Filter Bypass psi/Mazda replacment for Subaru [Re: Izb]
ZeeOSix Offline


Registered: 07/22/10
Posts: 11934
Loc: PNW
Originally Posted By: Izb
I am afraid, that a lot of previous media (using by Purolator, Champ, Fram, Mobil, Amsoil, RP) ... can be destroyed under high pressure like 23-28 psi...

And this is the main reason of existing only few filters with high settings of bypass valve...

p.s.
For example, why Pure One PL14615 (announced 3 years ago!) is not in the market since then?


How do you know the media in the PL14615 is any different than the media in any other PureOne? And how do you know what filter brands would have media that would be destroyed with 23-28 PSID across the media?

A PureOne PL14006 with only 105 sq-in of media area has a low 5 PSID with 12 GPM of hot 5W-30 oil flowing through it.

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

The Subaru engines don't flow much beyond that, so if Subaru is specifying a 23 PSI bypass valve on their OEM filter, then it's for massive bypass headroom for various reasons (ie, filter loading, expected high engine RPM with cold thick oil, owner's using thicker oils than specified, etc), and/or the filter itself is pretty flow restrictive and has much more than 5 PSID with hot oil at 12 GPM.

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#3261297 - 01/27/14 08:12 AM Re: Filter Bypass psi/Mazda replacment for Subaru [Re: stenerson]
tojo1968 Offline


Registered: 01/03/14
Posts: 227
Loc: orlando fl
Originally Posted By: stenerson
I was gonna post question about filter for my new used 2005 outback. (it has new motor) Did a search and got this interesting thread. Good to know about this psi spec. I get the oem filters for about 6 bucks with washer, I guess I'll stick with that.

I've used OEM on my 06 Forester since new with no problems. BTW, check with your local dealerships and see if you can order parts on their website. I get filter/washer for $4.54+tax from my local dealer because I order and pay for them online.
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#3718206 - 05/02/15 08:08 PM Re: Filter Bypass psi/Mazda replacment for Subaru [Re: LoneRanger]
Trix Offline


Registered: 06/14/10
Posts: 29
Loc: OH
Fred Beans Parts has Tokyo Roki for all Subarus with the proper pressure setting (they use Mazda OEMs).

I've been using those and Blue Subaru filters for a while. The Tokyo Roki has more filter area, so I extend my OCIs to 5000k and not the 3750 they recommend.

04+ STi : PKN3R1AA000

2002+ WRX : PKN3R1AA000

2005-2009 Legacy GT : PKN3R1AA000

2010+ Legacy GT : PKN3R16010

2013+ BRZ : PKN3R16010
_________________________
I'm a chemical engineer, lubricant enthusiast.
2005 Subaru Legacy 2.5GT (Rotella T6, 5k OCI)
2005 Audi A4 Quattro (Mobil 0w40, 10k OCI)

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