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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: 650
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 1500 4x4 5.7 Hemi 194k miles
2005 suburu outback 129K

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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: 286
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: 6973
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: 27
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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