Air Filter
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From: C. E. White on 8 Oct 2007 23:45 "Retired VIP" <Jackj14321(a)yahoo.com> wrote in message news:7kn9g3599ea1pjhll1djadigme2004h57r(a)4ax.com... >> Hi Ed, > > Thanks for the link, you've done some work there. But I fail to see > what there is about any of the filters that you don't like. You admit > that you have no scientific test results on any of the filters. I > think it would be impossible to judge filter material efficiency by > appearance alone. I'm not saying that you are wrong, just that I > don't see anything from the pictures that would make me choose one > over the other. I didn't like the flimsy end caps on the Thailand made Toyota filter. I thought the Japan made Toyota filter had a superior bypass valve. The Japan made filter appeared to have a silicone anti-drainback valve and a silicone o-ring for the base gasket, while the Thailand filter had a nitrile anti-drainback valve and base gasket. The filter material in the Thailand filter was conventional cellulose. The Japan filter had a very different molded filter element. Was this superior? I don't know, but I am certain it was more expensive to make. I don't believe Toyota spends more money on a component unless they have a reason to do so. It may be that they only feel the unusual filter media is needed for a "new" engine. I know when I cut the OE filter open there were metallic particles trapped in the filter element. I see no reason to prefer the Thailand made Toyota filter over a Purolator PureOne filter. I think my original summary on the web page is still appropriate - "This filter [the PureOne] came off of a 2007 four cylinder RAV4 at the second oil change (4600 miles on the filter, around 7800 on the engine). It is a well made conventional filter with a silicone anti-drain back valve and base gasket. I'd rate it well ahead of the Toyota 90915-YZZF1 Oil Filter. I don't know where it fits relative to the OE Toyota P/N 90915-10004 Oil Filter. The 90915-10004 Filter is so different from conventional filters that any comparison made without the use of dedicated filter test equipment would be worthless. The Purolator PL14477 Filter can be purchased for around $6. This falls in between the Toyota 90915-10004 and 90915-YZZF1 Filters. If you are changing your oil at the recommended 5000 mile intervals, this filter is a better choice than the Toyota 90915-YZZF1 Oil Filter. Whether or not the 90915-10004 filter is worth $2 bucks more than the Purolator is an open question." For my SO's RAV4, I decided to stick with the Japan made Toyota filter, at least as long as I can get them for a reasonable price. It might not be better, but I'll bet it is not worse than the Thailand made Toyota filter. Ed
From: Retired VIP on 10 Oct 2007 10:14 On Mon, 8 Oct 2007 23:45:57 -0400, "C. E. White" <cewhite3(a)mindspring.com> wrote: > >"Retired VIP" <Jackj14321(a)yahoo.com> wrote in message >news:7kn9g3599ea1pjhll1djadigme2004h57r(a)4ax.com... >>> Hi Ed, >> >> Thanks for the link, you've done some work there. But I fail to see >> what there is about any of the filters that you don't like. You admit >> that you have no scientific test results on any of the filters. I >> think it would be impossible to judge filter material efficiency by >> appearance alone. I'm not saying that you are wrong, just that I >> don't see anything from the pictures that would make me choose one >> over the other. > >I didn't like the flimsy end caps on the Thailand made Toyota filter. I >thought the Japan made Toyota filter had a superior bypass valve. The Japan >made filter appeared to have a silicone anti-drainback valve and a silicone >o-ring for the base gasket, while the Thailand filter had a nitrile >anti-drainback valve and base gasket. The filter material in the Thailand >filter was conventional cellulose. The Japan filter had a very different >molded filter element. Was this superior? I don't know, but I am certain it >was more expensive to make. I don't believe Toyota spends more money on a >component unless they have a reason to do so. It may be that they only feel >the unusual filter media is needed for a "new" engine. I know when I cut the >OE filter open there were metallic particles trapped in the filter element. > >I see no reason to prefer the Thailand made Toyota filter over a Purolator >PureOne filter. > >I think my original summary on the web page is still appropriate - > >"This filter [the PureOne] came off of a 2007 four cylinder RAV4 at the >second oil change (4600 miles on the filter, around 7800 on the engine). It >is a well made conventional filter with a silicone anti-drain back valve and >base gasket. I'd rate it well ahead of the Toyota 90915-YZZF1 Oil Filter. I >don't know where it fits relative to the OE Toyota P/N 90915-10004 Oil >Filter. The 90915-10004 Filter is so different from conventional filters >that any comparison made without the use of dedicated filter test equipment >would be worthless. The Purolator PL14477 Filter can be purchased for around >$6. This falls in between the Toyota 90915-10004 and 90915-YZZF1 Filters. If >you are changing your oil at the recommended 5000 mile intervals, this >filter is a better choice than the Toyota 90915-YZZF1 Oil Filter. Whether or >not the 90915-10004 filter is worth $2 bucks more than the Purolator is an >open question." > >For my SO's RAV4, I decided to stick with the Japan made Toyota filter, at >least as long as I can get them for a reasonable price. It might not be >better, but I'll bet it is not worse than the Thailand made Toyota filter. > >Ed > Thanks for the answer Ed. I've only got my experience to go by but I've never had a problem with any oil filter. I've heard horror stories of seams breaking open and dumping all the oil on the ground, ruining the engine, etc. But it has never happened to me or anyone I know, it's always been a friend of a friend. I'll just stick to using name-brand filters and trust to luck, it hasn't failed my in 45 years. Jack --- avast! Antivirus: Outbound message clean. Virus Database (VPS): 000780-0, 10/09/2007 Tested on: 10/10/2007 10:14:55 AM avast! - copyright (c) 1988-2007 ALWIL Software. http://www.avast.com
From: Built_Well on 10 Oct 2007 12:30
Another good oil filter study can be found at http://minimopar.knizefamily.net/oilfilterstudy.html |