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Old 11-17-2008, 05:10 PM   #1
rhino6303
Scooby Newbie
 
Member#: 181314
Join Date: May 2008
Chapter/Region: NWIC
Location: SW Washington
Vehicle:
2005 Impreza OBS SRR
05 Legacy GT RBP

Default 4EAT Filter

Well, it's time to drain/refill my tranny fluid. I noticed that I may have some leakage around the spin-on filter.

1. I was wondering if I have to use a Subaru filter or can I use a WIX filter; i.e. are they any different?

2. Which should I use, the subaru tranny filter, or will an alternate filter work just as well?

I have searched for an answer, but just found answers on drain/refill practices and changing the filter, none on type.

Thanks in advance for any help.
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Old 11-17-2008, 06:27 PM   #2
bulwnkl
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Member#: 41070
Join Date: Aug 2003
Location: Arizona
Vehicle:
2005 Black Tiger
(Black Turbo Baja)

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The differences are equivalent to the differences between the OEM engine oil filter and aftermarket engine oil filters. IOW, the differences could be all over the map, but you're very, very unlikely to notice unless you're running analysis and trying to watch the differences. Possibly not even then, depending upon what filter you choose.

If you choose to entertain another alternative, the Amsoil EaO12 has served me well this past year-ish. Same filter as the engine on my Baja. I still have a used OEM tranny filter sitting on a shelf. I told myself that one day I'd cut it open and have a look at the insides. That day has not come, and it probably never will.

Last edited by bulwnkl; 11-17-2008 at 10:31 PM.
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Old 11-17-2008, 06:53 PM   #3
mikeythejew
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Member#: 141672
Join Date: Feb 2007
Vehicle:
07' wrx
Mothballed until winter

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Unlike some other filter manufactures, Purolator's transmission filter # P1285 is made only for use as an auto tranny filter, and specifically on Subaru's and saabaru's vehicles. A correct auto tranny filter will not have a pressure relief valve as it's not needed.
OEM or Purolator if I owned a slushbox.
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Old 11-17-2008, 07:08 PM   #4
rhino6303
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Member#: 181314
Join Date: May 2008
Chapter/Region: NWIC
Location: SW Washington
Vehicle:
2005 Impreza OBS SRR
05 Legacy GT RBP

Default

thank you for the information, looks like I'll go with the purolator.
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