Rehash. WC/WD oil filter
Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=210033
Printed Date: 05 Apr 2026 at 2:00pm
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Topic: Rehash. WC/WD oil filter
Posted By: Phil Stier
Subject: Rehash. WC/WD oil filter
Date Posted: 10 Feb 2026 at 10:40pm
| Ricks Relics made a video showing how the filter material in the WC/WD filter from NAPA filter is sawdust. What did the original filter use for filtering material? Is anyone making an original filter?? |
Replies:
Posted By: Don Jr NY
Date Posted: 11 Feb 2026 at 3:41am
| The original filters used cotton string as filter media. I always buy Agco filters. Baldwin is also a very reputable brand. |
Posted By: Robert Musgrave
Date Posted: 11 Feb 2026 at 1:50pm
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My dad always called the filtering media "Excelsior" wadded up cotton; similar to packing in early railroad car bearing journals that required lubrication. R. Musgrave |
Posted By: DSeries4
Date Posted: 11 Feb 2026 at 3:25pm
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From Google: http://www.w3.org/2000/svg" rel="nofollow - http://www.w3.org/2000/svg" > AI Overview Pleated paper oil filters were introduced in Key details regarding the evolution of paper oil filters: ------------- '49 G, '54 WD45, '55 CA, '56 WD45D, '57 WD45, '58 D14, '59 D14, '60 D14, '63 D15D, '66 D15II, '66 D21II, '67 D17IV, '67 D17IVD, '67 190XTD, '73 620, '76 185, '77 175, '84 8030, '85 6080 |
Posted By: steve(ill)
Date Posted: 11 Feb 2026 at 4:32pm
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20 years ago WIX / NAPA had a problme with the filters being PAPER instead of COTTON... That was later fixed.. OK today... Where did you get the SAWDUST story ? I have not heard that yet ?? ------------- Like them all, but love the "B"s. |
Posted By: PaulB
Date Posted: 11 Feb 2026 at 6:19pm
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WIX/NAPA packing their filters with sawdust doesn't surprise me at all. Another reason why I NEVER use NAPA products.
------------- If it was fun to pull in LOW gear, I could have a John Deere. Real pullers don't have speed limits. If you can't make it GO... make it SHINY |
Posted By: steve(ill)
Date Posted: 12 Feb 2026 at 1:12pm
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I have never had a problem with parts i bought from NAPA.... my problem with them is the PRICE.... Local Auto Zone or ON LINE purchases are normally much cheaper.. ------------- Like them all, but love the "B"s. |
Posted By: IBWD MIke
Date Posted: 13 Feb 2026 at 5:52am
Agree!
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steve(ill) wrote:Posted By: WF owner
Date Posted: 13 Feb 2026 at 6:56am
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I saw this video on Facebook yesterday. He cuts open a NAPA 7011 bypass filter, and he claims it is filled with chaff. With all the AI stuff, you can decide for yourself if it is real. I have used NAPA filters in the past (before their prices went crazy), but I have never cut one open. https://www.facebook.com/watch/?v=884595574365614" rel="nofollow - (1) Video | Facebook
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Posted By: steve(ill)
Date Posted: 13 Feb 2026 at 3:42pm
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I changed oil last week, so i went a grabbed the filter out of the trash. This filter probably has 100 hours on it over the last 2 years.. The filter was PACKED TIGHT with cotton fiber and a few cotton seeds. This is not CLOTH, this is raw cotton taken from the field that still has seeds in it.. Did not fall out of the can, packed so tight you have to pick it out with a screw driver. I ground up a hand full with my fingers and layed it on the table....This seems to be acceptable.. I doubt everyone is making these filters. I would bet there is one factory in India or China making thousands of theses and selling them to WIX, FRAM and BALDWIN.. who paint them and redistribute to NAPA, CAR Quest and Farm Stores with what ever "brand name" you want.. the guy in WFs movie says these are "rice seeds"..... i dont know.... but the "material" seems to be cotton like..  ------------- Like them all, but love the "B"s. |
Posted By: AllisFreak MN
Date Posted: 13 Feb 2026 at 7:00pm
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What brand did you cut open? ------------- '49 A-C WD, '51 A-C WD, '63 A-C D17 Series III, 1968 A-C One-Seventy, '82 A-C 6060, '75 A-C 7040, A-C #3 sickle mower, 2 A-C 701 wagons, '78 Gleaner M2 |
Posted By: steve(ill)
Date Posted: 13 Feb 2026 at 7:26pm
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NAPA 7011--- about 2 years old.. (Made by WIX). ------------- Like them all, but love the "B"s. |
Posted By: HudCo
Date Posted: 13 Feb 2026 at 7:57pm
| i bought my last napa filters last summer they got to expensive i cant even sell them at my jobber price let alone any jobber mark up cummins isx napa my cost 150.00 any were else 70.00 |
Posted By: Phil48ACWC
Date Posted: 14 Feb 2026 at 6:24am
| Years ago I read the filter media is Flax and the seeds are also from Flax. For the last several years I've been running my WC with a filter I modified so I can take it apart, wash it out, and repack the filter with Jumbo Cotton Balls from Walmart. Works great. Probably better than original. When I took apart the original filter and saw all the seeds inside, that's when I decided I can do a lot better for a lot less $. A cotton ball repack costs less than $2. I've put over 300 hours on my WC with cotton balls and all is great. I have an hour meter from Northern Tool on the WC, so the hours are for real. Oil pressure is the same as with the original Flax filter. The biggest challenge is making a removable perforated plate to retain the cotton balls in the filter housing. There's no way I'm paying $70 to $150 for an oil filter loaded with seeds that can get caught in my oil pump pick up screen or worse if the seeds circulate through the engine. |
Posted By: WF owner
Date Posted: 14 Feb 2026 at 7:19am
No more for NAPA for me either (and I use to buy a lot of stuff there). An old friend works at our local NAPA. I stopped in to see him one day and thought I would pick up an oil filter for my Powerstroke. NAPA wanted over $60. I drove down the road to the Ford dealer and bought a Motorcraft filter for $24.
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Posted By: JoeM(GA)
Date Posted: 14 Feb 2026 at 7:20am
as much as I don’t like them, at least they’re just down the road and still quite reasonable! ------------- Allis Express North Georgia 41 WC,48 UC Cane,7-G's, Ford 345C TLB |
Posted By: steve(ill)
Date Posted: 14 Feb 2026 at 7:53am
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with respect to the seeds in the filter... The filter is PACKED TIGHT with cotton.. This restricts the INLET pressure which is backed up toward the pump to 15 psi.. The OUTLET of the filter is zero as it dumps to sump... Only 15% of the total oil flow goes thru the filter, so it is MINIMAL flow. The seeds are basically TRAPPED into compacted material. I dont see any way for them to get out . I have never seen a seed near the drain holes that are minimal diameter, or in the base, or in the oil pan.. You would never know the seeds were there unless you cut the filter open and pick thru the cotton.. Dont see this being a big problem.. Proobably been that way for years.......... the add above shows the filters being $11. at Auto Zone..... I think i looked on line 2 years ago and got the NAPA version for a similar price... No, im not paying $20. for a filter either... My opinion is they are all the same and just buy on PRICE when you need one.. Im only changing once every 2 years anyway. ------------- Like them all, but love the "B"s. |
Posted By: WF owner
Date Posted: 14 Feb 2026 at 8:28am
| I bought a case of Baldwin T300-M filters a few years ago from ZORO for less than $7 each. They should last me the rest of my life. |
Posted By: Les Kerf
Date Posted: 14 Feb 2026 at 10:08am
I like it!
 Did you perchance take any photos of your modification in progress? |
Posted By: PaulB
Date Posted: 14 Feb 2026 at 2:43pm
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Does anyone remember the Bypass filter housing that you could get from J.C. Whitney for old cars and trucks with a bypass system that used a roll of toilet paper for the replaceable inside element? ------------- If it was fun to pull in LOW gear, I could have a John Deere. Real pullers don't have speed limits. If you can't make it GO... make it SHINY |
Posted By: Les Kerf
Date Posted: 14 Feb 2026 at 3:29pm
I have one of those, it was made by Frantz. I have planned to install it on one of my tractors but it hasn't moved up the priority list far enough yet.
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Posted By: SteveM C/IL
Date Posted: 14 Feb 2026 at 5:19pm
| My uncle had one on a 56 Chevy wagon. |
Posted By: Alberta Phil
Date Posted: 14 Feb 2026 at 5:57pm
| I'm pretty sure I've got a couple of those things laying around in my shed. I know I took one off a 20's Twin City tractor some years ago. No intention of installing one on any of my fleet! |
Posted By: Phil48ACWC
Date Posted: 15 Feb 2026 at 8:06am
| If the seeds are not there to begin with, there's no chance of them getting into my expensive rebuilt and modified engine. I don't dump rocks in the fuel tank knowing the sediment bowl will catch them. I'm sorry FOD is FOD (Foreign Object Damage). Flax or cotton are natural filter medias. Flax or cotton seeds are not. |
Posted By: wjohn
Date Posted: 15 Feb 2026 at 8:42am
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Has anyone ever cut open one of the old original flat top Allis-Chalmers filters from back when these tractors were new? ------------- 1939 B, 1940 B, 1941 WC, 1951 WD, 1952 CA, 1956 WD-45 |
Posted By: Alberta Phil
Date Posted: 15 Feb 2026 at 9:27am
| I could try that as I have a few around still. One still in use on my Allis 'U'. Also a new one, but I wont be cutting that one! |
Posted By: wjohn
Date Posted: 15 Feb 2026 at 11:33am
If you or anyone else has one that is pretty much junk (not a good display or tractor show piece) I think it would be really interesting to see what was used originally. We could then probably assume that filter media is what AC was okay with? I am really curious. I don't think I have any of the original filters but I can look through a few of my tractors too. ------------- 1939 B, 1940 B, 1941 WC, 1951 WD, 1952 CA, 1956 WD-45 |
Posted By: steve(ill)
Date Posted: 15 Feb 2026 at 12:50pm
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on the "NEW" filters that have the stuffed cotton and seeds, there is a 1/4 inch thick felt pad laying on the discharge plate, covering the holes... So nothing can get out.. Also the material is VERY TIGHT. The seeds are not moving around in the can or migrating toward the discharge.. I doubt the move at all from their original positon.. Like i said, i had to PICK the material out of the can with a screw driver.. Its very compressed.. ------------- Like them all, but love the "B"s. |
Posted By: WF owner
Date Posted: 15 Feb 2026 at 1:04pm
| If you decide that you want to experiment with making your homemade bypass filter, remember that years ago, several engine failures were caused by Wix filters that didn't do what they were supposed to do. It's your engine... |
Posted By: Alberta Phil
Date Posted: 23 Feb 2026 at 3:54pm
I opened up an old AC flat top filter today and it looks like its tightly packed with cotton string. On top of that is a piece of metal screen, then the threaded cover with the slotted metal dished piece in it.  
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Posted By: Les Kerf
Date Posted: 23 Feb 2026 at 4:49pm
Yup. The faulty Wix filters were made of paper and did not create enough resistance to flow which resulted in too much oil going through the filter and not enough oil to the engine. So long as a homemade filter has at least as much resistance (back pressure) as the stock filter, there will be no damage to the engine. Even if the filter is completely blocked, there will still be adequate flow to the engine.
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Posted By: wjohn
Date Posted: 23 Feb 2026 at 6:34pm
Thank you sir! That is very interesting.
------------- 1939 B, 1940 B, 1941 WC, 1951 WD, 1952 CA, 1956 WD-45 |