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Quite a few of us here had seen this originaly and wanted to discuss it or share it with others. But it disappeared and there were rumors as to why.
Well, it's back online and updated. If you click on 'FAQs' you can find the real reason the author took down his webpage.
Basicaly it was a physical study of oil filters done by cutting them open and measuring and scrutinizing all internal components. It also cross referenced all brands by manufacturer. For instance Motorcraft filters are made by Purolator.
Anyway, it's interesting and worth a look. Definately an eye opener.
[updated:LAST EDITED ON 02-Jul-02 AT 05:01 PM (EST)]VERY Good! But the part about the bypass valve positioning (Ford specifies at the inlet end rather than the bottom) seems to be missing.
horsepuller thanks for putting it out...i have learned quite a bit off this and boy i can tell you i needed to be educated on this subject...my two brothers are mechanics and im sure they would agree on this filter study...thank you once again
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This "study" only counts the length of the material and makes no attempt to measure thickness, density, etc. While the length of the material is important, its moot without a study of the other properties.
In other words, if I have two different types of filter material and one sucks and one is good, how does using more of the sucky material make it better?
I agree that the report is not very scientific, but compared to all the other reports I have seen (which total up to zero), some information is better than no information at all.
Well, I wasn't endorsing this study as a technical paper.
I think the author pretty much acknowledges that as well.
Excerpted from the first page of the report...
"Warning! These pages are NOT to be taken as gospel. The primary motivation behind this study was to provide information about what oil filter brands are made by which manufacturers. The secondary motivation was to uncover some of the obvious internal construction issues of these manufacturers. This "study" is not a "test"."
"Another shortcoming is the lack of testing of the filter element media itself."
"With all of that said, please make your own judgements. Use this study only as a source of some information that may give you a better idea about which filter brands to steer clear from."
Ken, if ya dont like something, Change it! someone around here with some extra time (not namely ken but he brought it up) should dig into this and make their own study, maybe publish the results on the site.
I don't know if any of you have read the oil and oil filter article from the SHO club but it's pretty good too. It's recently been updated. They added page six to it with more oil filter info:
Rezvani's Latest Post-Apocalytic Monster Is a Ford F-150 Raptor Underneath
Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.