ericutexas Posted October 9, 2010 Author Share Posted October 9, 2010 Like Boostin said - I don't think manifold clearance is an issue. That's more related to the diameter of the filter rather than the length (the RX-8 filter is the same diameter, it's just longer and thus has a higher capacity). Otherwise we'd use the Tokyo Roki black H6 filters, but those are larger in diameter. http://www.bobistheoilguy.com/forums/ubbthreads.php?ubb=showflat&Number=1413097#Post1413097 Here's another (loooong ass 14-page, lol) thread from BITOG that talks about the unusual 23psi bypass on the filter. I buy into what this guy thinks in his post - that running a non-OEM filter with a lower bypass pressure could be somehow related to turbo failures. I looked at the bypass psi for the Napa 1365 that is listed as the correct filter for our turbo engines, but the bypass opens from 8-11psi, which is less than half of what the black/blue OEM filters open at. So the Napa/Wix/Purolator filters might function ok at normal operating temps, but in situations where there's higher psi, like a cold start or high revs, these filters might actually be in bypass mode. We know that extended OCIs are related to the banjo bolt filters getting clogged up and subsequent turbo failure, and having an oil filter that's operating in bypass because it's the wrong spec is just as bad. One of the techs at a local Subaru indie seems to think the same: http://allwheeldriveauto.com/whats-new-with-subaru/#comment-18439 Link to comment Share on other sites More sharing options...
BAC5.2 Posted October 9, 2010 Share Posted October 9, 2010 Looks like I'll order a case of the RX8 filters, then. [URL="http://legacygt.com/forums/showthread.php/proper-flip-key-interesti-159894.html"]Flip Key Development Thread[/URL] "Genius may have its limitations, but stupidity is not thus handicapped." - E. Hubbard Link to comment Share on other sites More sharing options...
GTTuner Posted October 9, 2010 Share Posted October 9, 2010 I haven't pulled apart a filter yet that had a softer spring than the blue filter. Interesting. Link to comment Share on other sites More sharing options...
Boostin1657615274 Posted October 9, 2010 Share Posted October 9, 2010 If you look at this spec sheet, the 2004-2008 Rx-8 (series 1 Rx-8) filter has an 11.4-17.1psi bypass pressure, versus the 20.3-26.1psi bypass pressure of the 2009+ (series 2 Rx-8) models. So don't mistakenly order a 2004-2008 filter thinking that it's the same thing as the 2009+. http://legacygt.com/forums/attachment.php?attachmentid=90975&stc=1&d=1286483444 On the search for a new DD... Link to comment Share on other sites More sharing options...
LosAngelesLGT Posted October 9, 2010 Share Posted October 9, 2010 Link to comment Share on other sites More sharing options...
dwolson2 Posted October 9, 2010 Share Posted October 9, 2010 What do you guys think about the K&N site giving the same part number for the LGT as the 04-RX8? Shouldn't it then be interchangeable? I couldn't find a tough guard fram when I went to wally world for the 8, but could for the lgt. Link to comment Share on other sites More sharing options...
Gmachine Posted October 9, 2010 Share Posted October 9, 2010 What do you guys think about the K&N site giving the same part number for the LGT as the 04-RX8? Shouldn't it then be interchangeable? I couldn't find a tough guard fram when I went to wally world for the 8, but could for the lgt. I don't know anything about K&N oil filters,but speaking in general. Many after market companies list one part number for multiple applications. To me this just means it will bolt on,not leak,and filter oil. Do you think it is the ideal oil filter for your specific application? Oem filters are not bank busters when it comes to price. Don't cheap out on the important stuff,especially when your talking about parts that only cost 10 bucks or less. Link to comment Share on other sites More sharing options...
BAC5.2 Posted October 9, 2010 Share Posted October 9, 2010 So PN# N3R1-14-302 IS the correct PN? [URL="http://legacygt.com/forums/showthread.php/proper-flip-key-interesti-159894.html"]Flip Key Development Thread[/URL] "Genius may have its limitations, but stupidity is not thus handicapped." - E. Hubbard Link to comment Share on other sites More sharing options...
ericutexas Posted October 10, 2010 Author Share Posted October 10, 2010 So PN# N3R1-14-302 IS the correct PN? Yup, that's the 20-26psi one for the 09+ RX-8. Link to comment Share on other sites More sharing options...
scoobydoobie Posted October 10, 2010 Share Posted October 10, 2010 Nice, good find. I'm not too surprised, when I put a borla replica header on my 99' AT forester, had to switch to a smaller Mazda Miata oil filter to clear the pipes. Fit perfectly, same exact gasket area, etc. Link to comment Share on other sites More sharing options...
BAC5.2 Posted October 22, 2010 Share Posted October 22, 2010 http://www.mazdaparts.org/mazda-rx8-oil-filter.html $6.45/ea + shipping. Shipping on a case of 10, to me, is $16.00 for UPS Ground. [URL="http://legacygt.com/forums/showthread.php/proper-flip-key-interesti-159894.html"]Flip Key Development Thread[/URL] "Genius may have its limitations, but stupidity is not thus handicapped." - E. Hubbard Link to comment Share on other sites More sharing options...
BAC5.2 Posted October 22, 2010 Share Posted October 22, 2010 http://www.mazmart.com/ItemDetail.aspx?id=614 Save a bit here, a case of 10 for $6.25 each. Shipping is $12.33 to me. [URL="http://legacygt.com/forums/showthread.php/proper-flip-key-interesti-159894.html"]Flip Key Development Thread[/URL] "Genius may have its limitations, but stupidity is not thus handicapped." - E. Hubbard Link to comment Share on other sites More sharing options...
adolan21 Posted October 23, 2010 Share Posted October 23, 2010 I looked up mazmart on the RX 8 forums because the site looked a little sketchy to me, they check out to be a great vendor, so order away if you wish. I might be able to nicely ask him to set up a group buy if enough people are onboard. Shoot me a PM if you're interested and I'll ask him when I know how many people are willing to buy. Link to comment Share on other sites More sharing options...
SubOperator Posted October 23, 2010 Share Posted October 23, 2010 I wish someone had an old black filter they could send me to compare with the new blue one. You'll have one after my next oil change. Wish I read this thread before we put new turbo on - I changed oil that morning and threw black filter out. Nice find, will get a box of 09+ Mazda RX08 filters. 2005 LGT Wagon Limited 6 MT RBP Stage 2 - 248K 2007 B9 Tribeca Limited DGM - 258K SOLD - 2005 OB Limited 5 MT Silver - 245K SOLD - 2010 OB 6 MT Silver - 205K Link to comment Share on other sites More sharing options...
BAC5.2 Posted October 25, 2010 Share Posted October 25, 2010 Has anyone actually used one yet? I'm about to order a case, but don't want to get stuck with a case of filters I can't use. A pack of 10 should last me about a year. [URL="http://legacygt.com/forums/showthread.php/proper-flip-key-interesti-159894.html"]Flip Key Development Thread[/URL] "Genius may have its limitations, but stupidity is not thus handicapped." - E. Hubbard Link to comment Share on other sites More sharing options...
fishbone Posted October 26, 2010 Share Posted October 26, 2010 +1 to the above. I've been using Purolator PL14610 or 14610 filters, did a UOA over winter where supposebly the filter would be in bypass mode the most, came back fine except some abnormal bearing wear. The Purolator filter bypass is rated for 14-18PSI. I've had UOAs come back on the OEM filter which showed contaminants in oil (silica, dirt). So I am undecided if I should stick to PL or not. Link to comment Share on other sites More sharing options...
fishbone Posted October 26, 2010 Share Posted October 26, 2010 Just remembered I contacted Purolator about this a while back, the response from a product engineer was: The relief valve setting would actually lower the rist of restrictive oil flow to the engine, at cold startups and when the filter gets to the end of its life. Some of our competitors use similar valve opening settings. If our valve setting was above the 23PSI, then I would be concerned about a possible problem Link to comment Share on other sites More sharing options...
Nosser25rs Posted October 26, 2010 Share Posted October 26, 2010 Installed tonight. Looks like I'm the guinea pig. Link to comment Share on other sites More sharing options...
porterdog Posted October 27, 2010 Share Posted October 27, 2010 The relief valve setting would actually lower the rist of restrictive oil flow to the engine... Sure, it lowers the risk of reduced oil flow, but increases the risk associated with unfiltered oil. I dunno what to think, really- why did Subaru specify a bypass pressure that was significantly higher than normal? And those filters... tiny! Link to comment Share on other sites More sharing options...
fishbone Posted October 27, 2010 Share Posted October 27, 2010 After reading some more, it seems to indicate that the high bypass setting is related to more flow resistance by the Subaru filter itself. I cannot explain any other way why the PureOne did a better job filtering the oil than the old black OEM filters did, even in the dead of Nebraska winters. If it ain't broke, don't fix it, therefore I am going to listen to the UOAs and stick with PureOne. Link to comment Share on other sites More sharing options...
BAC5.2 Posted October 27, 2010 Share Posted October 27, 2010 Your UOA of the P1 showed "abnormal bearing wear". Why? [URL="http://legacygt.com/forums/showthread.php/proper-flip-key-interesti-159894.html"]Flip Key Development Thread[/URL] "Genius may have its limitations, but stupidity is not thus handicapped." - E. Hubbard Link to comment Share on other sites More sharing options...
GTTuner Posted October 27, 2010 Share Posted October 27, 2010 See post #8. Stick with Subaru filters IMO. Link to comment Share on other sites More sharing options...
BAC5.2 Posted October 27, 2010 Share Posted October 27, 2010 "Subaru" filters = Tokyo Roki RX8 filters, no? [URL="http://legacygt.com/forums/showthread.php/proper-flip-key-interesti-159894.html"]Flip Key Development Thread[/URL] "Genius may have its limitations, but stupidity is not thus handicapped." - E. Hubbard Link to comment Share on other sites More sharing options...
rao Posted October 27, 2010 Share Posted October 27, 2010 If they are equal to them then why all of the fuss? I am sure Subaru knows nothing about the oil filtration needs of the engines that it builds, so the search for a better oil filter continues - increased bearing wear be damned! Rob IF YOU CARE ABOUT YOUR CAR YOU SHOULD NEVER DRIVE IT Link to comment Share on other sites More sharing options...
GTTuner Posted October 27, 2010 Share Posted October 27, 2010 ^^^^^ IKD, just my opinion based on pulling filters apart. The big difference with the Subaru filters are the size, shape and quanity of the inlet holes, not to mention the relief valve setting. Someone send me the Mazda filter so I can disect. Link to comment Share on other sites More sharing options...
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