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Why is OEM Oil Filter soooo tiny???

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Old 05-16-04, 07:29 PM
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Why is OEM Oil Filter soooo tiny???

Just taking my car out of storage since i bought it and figured i would change oil and filter. I picked up a new one from Mazda and this thing is freakin TINY!!!
I originally had a FRAM Filter on from the previous owner... But man, i cannot get over how small this thing is...
Old 05-16-04, 07:43 PM
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lol. yeah , they are pretty tiny.It looks about a two thirds smaller, but they do the job.
Old 05-16-04, 07:49 PM
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Yea, I too always wondered why they were so small.
Old 05-16-04, 07:52 PM
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internally the Mazda oil filter has almost three times the filter area than Frams, as well as twice as much most other aftermarket oil filters (including the famed Purolater and AC delco filters).

try cutting open the filter case and comparing... you would be very surprised to see how little the actual filtering element area is in a Fram when comparied to a Mazda filter.

And this really is not a 2nd gen specific thread

Last edited by Icemark; 05-16-04 at 07:55 PM.
Old 05-16-04, 08:52 PM
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Sorry i didn't know if the 1st or 3rd gens were any bigger/smaller or whatever...
Old 05-16-04, 08:59 PM
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1st and 3rd gens can use the Mazda OEM filter you used on your 2nd gen.
Old 05-16-04, 10:27 PM
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huh. i think im going to go oem for my next filter. you are such a wealth of knowledge icemark.
Old 05-16-04, 11:16 PM
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Originally posted by Icemark
try cutting open the filter case and comparing... you would be very surprised to see how little the actual filtering element area is in a Fram when comparied to a Mazda filter.
And you'll also notice that Fram filters have cardboard end caps... Fear the lack of quality!
Old 05-17-04, 12:27 AM
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Originally posted by Icemark
internally the Mazda oil filter has almost three times the filter area than Frams, as well as twice as much most other aftermarket oil filters (including the famed Purolater and AC delco filters).

try cutting open the filter case and comparing... you would be very surprised to see how little the actual filtering element area is in a Fram when comparied to a Mazda filter.

And this really is not a 2nd gen specific thread
ive seen the mazda cutaways, but the fram was a suprise, theres not a lot going on in there!
Old 05-17-04, 05:34 AM
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I have no end of scorn and mocking for Fram filters :O

I know they have problems with the glue that holds the cardboard together falling apart and getting into oil gallies . . .
Old 05-17-04, 07:40 PM
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One of the few cases where [outside] size does not matter.
Old 05-17-04, 08:21 PM
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yup what mark said.They are very dense inside.
Old 05-17-04, 08:31 PM
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what can you tell me about K&N oil filters.
Old 05-17-04, 08:34 PM
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someone had a writeup on the k&n oil filters not too long ago, try a search. they said the filter made their oil pressure go up but wasnt sure if that was due to a more restrictive filter or not. the k&n does have a bolt on the top to take it off more easily.
Old 05-17-04, 08:40 PM
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The way I look at it, K&Ns are way too expensive, plus I guarentee they're not any better than the OEM filters. Plus, you can always find good deals on large cases of oil filters on Ebay and such...
Old 05-17-04, 09:12 PM
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get the v6 626 filter if you feel the OE rotary filter is too small...

same manufacturer, slightly bigger, so in theory more filtering surface area.
Old 05-17-04, 11:16 PM
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just out of curiosity any problems with using the v6 626 filter

you know like fiting being able to screw it in or anythying like that?
Old 05-17-04, 11:54 PM
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it's a direct fit. no problems whatsoever
Old 05-18-04, 05:37 AM
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If you use that filter, and you've used the OEM filter, next time you do an oil change, take the old filter and chop it open and pop out the filtering material, then unravel it to its full lenth and put the material from both filters next to eachother, and take a picture for us

Thats the only real easy way to tell :-p
Old 05-18-04, 07:07 AM
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Icemark, do you know who the manufacturer of the OEM filter is? I thought I'd read somewhere it's identical to a purolator Pure One with the anit-drainback valve.

Maybe I'll go pick up an OEM and pure one and cut into them...
Old 05-18-04, 07:50 AM
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Tennex is making the current filter for North America Mazda.
Old 05-18-04, 10:40 AM
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Originally posted by Icemark
Tennex is making the current filter for North America Mazda.
hey thats my line!

i have a source for the jdm oil filters if anyone is interested, same price as the usdm filters
Old 05-18-04, 10:52 AM
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my local dealer are using Mahle-made (some austrian company that makes Mazda Europe parts) Mazda OE filters.
Old 05-18-04, 11:07 AM
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Originally posted by ZoomZoomH
my local dealer are using Mahle-made (some austrian company that makes Mazda Europe parts) Mazda OE filters.
mahle makes tons of stuff for euro cars (pistons, cylinders (porsche), filters etc), i dont think your dealer is buying from mazdausa though
Old 05-18-04, 11:20 AM
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i believe for a short while MUSA was sourcing some parts from MEurope suppliers...


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