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Oil Filters, whose is best, and Why?

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Comments

  • bluedevilsbluedevils Posts: 2,554
    The Isuzu brand filter I use for my 98 Trooper says "Made in USA" and "Filtech Inc." on it. I see a few positive comments about Filtech-made filters (some or all of Honda's OEM filters, etc.). Just wondering if there are any more comments out there about Filtech-made filters.

    Jake, the expert Isuzu mechanic on the now-defunct Ask Jake forum at www.itog.com (Isuzu Trooper Owners Guild), always swore by genuine Isuzu oil filters.
  • armtdmarmtdm Posts: 2,057
    As they are so inexpensive why not cut one open and look at the consturction?

    I sort of concur though that Wal-Mart is into price more then quality and it make sno difference who makes the filter it is what is inside and the quality of the inside parts.

    So for $2 cut one open!
  • Well I'm no expert, and I don't even play one on TV, so if you drive like 90% of the public does, you are probably fine with the Motorcraft filter.

    I tend to see the redline (7K) several times a day when I'm out playing in my SVT Contour and I've been know to try to do better than double the recommended speeds in exit ramp corners, so I tend to believe the higher flow ratings of the K&N are better than the superior filtering of the PureOne/Motorcraft unit. Of course this is my weekend fun car, I drive the '87 LeSabre M-F for my work ride.

    I use 5W30 Mobil One and the K&N 2010 every 5K miles or 6 months, mostly because I can sleep better at night.

    If I still blow an engine due to oil starvation... Well, that's simply an opportunity to mate the 3L Duratec bottom end with the SVT heads and have an even more powerful SVT 8^)

    Hope this helps.

    TB
  • adc100adc100 Posts: 1,521
    I also checked out the K&N filter and after thinking about it, I believe the high flow claim is a bogus issue. The flow you get in your oil system is a function of all the resistances in the flow path. Certainly the filter is one of those elements. But I m guessing it is not even the major one. The back pressure is caused by the bearing clearances, delivery points and lengths of drilled ports and oil gallerys. So while it sounds good that the filter can pas 12 gal. per minute. Its not really the determining factoy. Its like getting a 200 foot long 3/8" I.D. garden hose and then splicing in a piece of 3/4" hose and expecting the flow to go up. In my humble opinion a Pure-1 or Mobil 1 with the higher efficiencies and changed more frequently are the way to go.
  • The Motorcraft filter FL820S seems to be rated at only 3gpm. So if the pump is rated at much more than that (12+ GPM if I recall) then that is a significant obstacle. While I agree there are other obstacles in the engine, the oil has to reach there in the first place. So I feel better knowing the oil filter will not be most restrictive point in the oiling system.

    I don't believe that the K&N will increase the potential oil flow to the top of the engine. But I do believe that a restrictive oil filter can prevent ever reaching the maximum flow in those other areas.

    TB
  • csandstecsandste Posts: 1,866
    The Wal-Mart filter is the standard Champion Labs unit. The Mo-Par study cut a number of them open, they are all pretty much alike. Of course in those days Wal-Mart was selling STP which has now moved over to Auto Zone. My assumption is that there's no difference in any of them.
  • adc100adc100 Posts: 1,521
    Thats true..and I guesss its best to error on the side of being conservative. The trade off is the filtering efficiency. Like any engineering problem there is usually no one "perfect" solution. And neither one of knows if the greater flow outweighs the possible slightly extra wear due to less filtering ability. The fact that the K&N has fiberglass filtering media makes your argument a little stronger than mine. It does have fiberglass, right??
  • bluedevilsbluedevils Posts: 2,554
    thanks for the feedback. With my driving habits, I don't think there's any need for the higher flow rate of the K&N filter. I'll probably stick with the Motorcraft.
  • bluedevilsbluedevils Posts: 2,554
    I was at Wal-Mart today and noticed the signs on the shelves said "Champion Labs Inc." in smaller type, above the "Super Tech model #xxxxx" text. I saw signs for several different filters, and all of them said 'Champion Labs.'

    BTW, the Super Tech ATF said "Quaker State" in small type above the "Super Tech" text. $4.17 per gallon - not bad.
  • I have always used Mazda filters on my rx7 and my new protege 5. Should this be fine or should I go with a different filter? I am going to be using Mobil 1 with the protege 5, would the OEM filter that mazda sales be fine or should I go with the Mobil 1 filter?
  • Quoted Shamelessly from their website:


    "What makes K&N oil filters better?

    The K&N Performance Gold® Oil Filter has been constructed from the ground up to satisfy the high performance needs of race car owners and drivers, as well as the average vehicle owner who wants the very best oil filter available. Our oil filter's efficiency rating meets or exceeds the requirements of high performance automotive engine builders. The heavy duty construction provides over 550 PSI hydrostatic burst*, and helps reduce the risk of rock and stone damage.


    The real quality isn't just on the outside... the inner filter element traps contaminant as small as 10 to 20 microns in size. We use metal top end caps instead of paper to ensure that no unfiltered oil can get back into the system. The solid construction allows for oil flow rates between 12-16 gpm (depending on filter size), and is unaffected by racing fuels. All K&N Performance Gold® Oil Filters are manufactured to exacting engineering standards. They are covered by a limited warranty to be free from defects in materials and workmanship when installed and replaced using engine and equipment manufacturers recommended service interval.


    *Based on HP-3001 performance test"


    http://www.knfilters.com/oilfilter.htm


    So I dunno if it is Fiberglass or an "enhanced paper element" but I do know that it will not be the element that prevents oil from getting to the top of the engine or into the bearings.


    Yes, I have made the conscious decision that even dirty oil readily available is superior to ultra clean oil that cannot be pumped to the parts that need it.


    TB

  • armtdmarmtdm Posts: 2,057
    My experience has been that regardles of the OEm filter that Mobil 1, Pure One and Amsoil are better filters. So if you are going with Mobil 1 why not go all the way.
  • adc100adc100 Posts: 1,521
    Probably even Fram would be able to clain a lot of these points. This one cracks me up::"... the inner filter element traps contaminant as small as 10 to 20 microns in size. " Any filter (even Fram) will trap those size particles. The question is with what eficiency- 5%, 10%. Notice they did not reference standard SAE single and multipass tests? Again - having said that- its probably a good filter.
  • csandstecsandste Posts: 1,866
    http://members.nbci.com/minimopar/oilfilter-fram1.txt


    I had looked at the MoPar study on a number of occasions, I forgot just how bad the confessions of the Fram engineer were however. Scary stuff, indeed. I'm going to paste this to my dashboard along with a large sign instructing the Wal-Mart flunkies to use their own brand oil filter and to keep the Fram stuff off my car!

  • I used Fram filters for a very short period of time (I wish other filters had those handy dandy grips) and the difference was very noticeable. Even if my car had sat for only about 30 minutes I had horrible valvetrain noise for a few seconds on startup. My car had never done that before and I didnt know much about the construction of oil filters then. Ever since going back to getting my oil changed at Texaco Xpress Lube no more noisy valvetrain on startup.

    Anyways, I read on some MR2 website that Toyota filters are even worse then Fram filters. Does anyone know who builds Toyota filters? Also does anyone know who builds Honda filters?

    Thanks
  • Sorry, I can't help you with Toyota filters.

    Honda filters are either very good or sorta poor. The made-in-USA Honda filters are made by a company called Filtech. These are EXCELLENT. I'd use these above just about any other brand of filter.

    There is also a smaller, lighter filter made in Canada which is ... with God as my witness ... a Fram filter cartridge in a higher-quality canister ... probably assembled by Fram. Yes, I cut them open and saw the cardboard and all!

    >:^O

    I now use Hastings filters (LF-402, I think) instead of OEM Honda because my usual outlets for OEM parts have switched over to the Canadian filters. <:^(

    --- Bror Jace
  • armtdmarmtdm Posts: 2,057
    I mailed Amsoil a letter yesterday specifically asking one question. Since we know that Hastings (actually Baldwin as Hasting sold out years ago to them and are only a marketing name) manufactures Amsoil filters and Amsoil consistently publishes data on how their filters are better then Hastings I asked them specifically to verify if the Amsoil filters (manufactured in the same plant) are made to different specifications and use different components then Hastings. I have seen some people claim if they cut both open they are exactly the same inside.

    I will post their reply when received. By the way, Amsoil rates their filter first follwed by Mobil 1 and Hard Driver (very close 2nd and 3rd ratings, I mean very close to Amsoil) followed by Hastings followed by Pure One.
  • wtd44wtd44 Posts: 1,211
    Those SuperTech filters at Waldomart are looking better and better as the flim-flam surfaces on the illogical claims...
  • bluedevilsbluedevils Posts: 2,554
    The Isuzu brand filters I use for our 98 Trooper say "Filtech Inc." on the outside. Can I safely assume that this filter, like the OEM Honda filters made by Filtech, is quality filter?
  • I use the AC PF52 filter for the Chev 4.3 v6 motor, I normally buy them at Kmart for $2.50 when they are on sale , normally less than $3 anyhow...

    I was just at Walmart and was looking at those Supertech filters and compared it to the PF52 at Walmart...Comparing the 2 filters for that motor surprised me! other than the color of the can and the size/number of the oil inlet holes( the Supertech had the normal Champion signature 1-large inlet hole bigger than the others..)..the 2 filters are the same inside, looking at the 2 they are identical when looking inside oil outlet hole. The AC PF52 sold at Walmart is NOT the same as the AC PF52 sold at Kmart or other places. If you really want the AC filter go across the street and get it from Kmart, If you want it from Walmart just get the Supertech , its the same(at Walmart anyway) and only costs $2, oh yeah, they sell Fram too, get the supertech!

    I found a page that has a comparison photo of the AC PF44 and the UPF44(Ultraguard gold version) BIIGGG difference , also $2.50 vs $10...

    check it out


    http://www.cau-llc.com/acdelco.htm

    see y'all

  • adc100adc100 Posts: 1,521
    The PF 52 can be substituted for the PF 47 if there is room. The head and threads are the same on both. The GM 3.1,3.3,3.4 L are all on the bottem of the block and there could be too much of the filter hanging down. I'm sure they will fit in the 2.2 4 cyl variety. I'll find out. Pure One has an equal for the the PF 52- I believe its PL 25111, don't quote me on the #.
  • armtdmarmtdm Posts: 2,057
    How can this possibly be two different filters simply because it is sold at different chains. If it si AC, I would find it hard to believe, the guts are different depending on where it is sold? You imply that AC alters th especifications depending on who the mass merchandiser is
  • wtd44wtd44 Posts: 1,211
    Some time ago, I noted a difference between STP filters between Walmart and Autozone. I concluded that the Walmart filters were part of the "old stock" and the Autozone STP's were part of the new batch used to replace Deutsch. I didn't CUT into any of them.
  • csandstecsandste Posts: 1,866
    Apparently multiple manufacturers are fairly common for OEM type filters...

    This is on the separate web page for Mopar filters, it links to the overall study:

    http://members.nbci.com/minimopar/oilfilterstudy-mopar.html

    "3549957
    I purchased this filter from two places, to prove a point. The point is that Mopar filters are like a box of chocolates; you never know what you are going to get. In fact, this seems to be true of many OEM and some clone-brand filters. I purchased one filter from my local dealer and the other from a nearby store that stocks some Mopar parts (Murray's Auto Parts). Though the Mopar part numbers are the same, the filters are completely different. You can identify the manufacturer of a particular filter by looking at the backplate. See the AC Delco, Champion, Fram, Purolator, and Wix sections for the details on what to look for."
  • That's what I'd guess.

    Buy one, use it and cut it open afterwards to see if the innards look like they are well constructed. An OEM filter may not be the best ... but it won't be damaging/dreadful.

    --- Bror Jace
  • Just tellin it like I see it, the thing that surprised me most was that the PF52 is a filter for a common GM motor.... I would not be as surprised if it was an AC filter for a non-GM motor, but anyway, I will either get the AC PF52 from Kmart, or get another brand from somewhere else, If I have to get it at Walmart I will save the $.73 and get the Supertech....probably not a major difference especially at that cost.......HHMMM at that cost I could probably start changing filter every 1000 miles and just top off the oil.....Just kidding....like CSANDSTE quoted from the MOPAR article...looks like any brand can have multiple manufacturers , in this case Walmart may have worked a CHEAP deal with AC.
    I don't really push the oil anyway, change every 3k, even cheap filters should handle that.
    And when my wife wants to go shopping at Walmart, I say ok, I'll be in the sporting goods/auto department...looking at filters....
    and pointing some serious prayers towards NY and Washington DC
    see y'all
  • Who makes the Castrol oil filters, Kmart has them on sale this week-they any good?
  • csandstecsandste Posts: 1,866
    This would be from memory but my guess would be that they're both Purolators. I couldn't tell any difference between Penske and Castrol the last time I was in K-Mart. The filtering medium might be different, but I doubt it.
  • adc100adc100 Posts: 1,521
    The cannister for the Super-Tech (welcome to Wal-Mart) filter's appears to be the same as -would you believe- Mobil 1. There is a "Y" stamped on the inlet/outlet head and the inside looks the same. Including the bypass valve. I suspect that the cannister/guts for most filters are either made my Champion or Hastings Pure one's are different-hard to tell who makes 'em.

    BTW I noticed that some of the Pure-One filters call for a relief presssure of 10-14 pounds in some filters which have no visible bypass valve. Whats up with that???
  • wtd44wtd44 Posts: 1,211
    Seems every time we turn around, somebody is dropping info that further agrandizes SUPER TECH. Mobil 1 similarities? Maybe we should move them up to near the top of the class...
This discussion has been closed.