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[cut open] Allison 29539579 spin-on filter for 1000 series trans in Duramax #4889368
10/06/18 04:05 PM
10/06/18 04:05 PM
Joined: Aug 2003
Posts: 2,275
Naperville, IL
wwillson Offline OP

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wwillson  Offline OP

Administrator
Joined: Aug 2003
Posts: 2,275
Naperville, IL
This filter is from my 2018 Duramax. This is the original spin-on filter with a total of 8,000 miles. There is a small amount of metal flakes in the filter and only enough clutch friction material to discolor the media. I see no reason to change this filter more often than 25,000 miles. The magnet that mounts between the filter and trans body had a small amount of dark material stuck to it - probably a couple grams.

IMG_3131 - Copy.JPGIMG_3134 - Copy.JPG
Re: [cut open] Allison 29539579 spin-on filter for 1000 series trans in Duramax [Re: wwillson] #4889384
10/06/18 04:25 PM
10/06/18 04:25 PM
Joined: May 2018
Posts: 1,126
Tri State Conservative
Zee09 Offline
Zee09  Offline
Joined: May 2018
Posts: 1,126
Tri State Conservative
Yeah looks like a long term filter.


"If I walked on water, they'd say I couldn't swim."
Re: [cut open] Allison 29539579 spin-on filter for 1000 series trans in Duramax [Re: wwillson] #4889462
10/06/18 06:49 PM
10/06/18 06:49 PM
Joined: May 2012
Posts: 5,527
Fort Lauderdale, FL
DoubleWasp Online content
DoubleWasp  Online Content
Joined: May 2012
Posts: 5,527
Fort Lauderdale, FL
My understanding is that most transmission spin-on filters by the OEM are still rock catchers. Better rock catchers than the pan filters, but still around 60-80 microns. That's why I replaced mine with an XG7317.


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Re: [cut open] Allison 29539579 spin-on filter for 1000 series trans in Duramax [Re: wwillson] #4889558
10/06/18 09:10 PM
10/06/18 09:10 PM
Joined: Oct 2009
Posts: 36
Cloquet Mn.
bobbobtar Offline
bobbobtar  Offline
Joined: Oct 2009
Posts: 36
Cloquet Mn.
When I had a 2009 Chevy Duramax with the Allison 1000 transmission I would change the trans. filer every oil change about 10,000 miles cheap insurance.


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Re: [cut open] Allison 29539579 spin-on filter for 1000 series trans in Duramax [Re: wwillson] #4889632
10/06/18 11:34 PM
10/06/18 11:34 PM
Joined: Dec 2016
Posts: 6,447
Waco, TX
Linctex Offline
Linctex  Offline
Joined: Dec 2016
Posts: 6,447
Waco, TX
Originally Posted by wwillson
I see no reason to change this filter more often than 25,000 50,000-75,000 miles. The magnet that mounts between the filter and trans body had a small amount of dark material stuck to it - probably a couple milligrams grams


There, I fixed all of that for you.


"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."
Re: [cut open] Allison 29539579 spin-on filter for 1000 series trans in Duramax [Re: wwillson] #4893078
10/10/18 03:22 PM
10/10/18 03:22 PM
Joined: Sep 2017
Posts: 88
Southeast
BlakeB Offline
BlakeB  Offline
Joined: Sep 2017
Posts: 88
Southeast
I changed the spin-on trans filter on my Dads 2016 LML at 31k with 2073 hours. The magnet had some fuzz on it, but nothing excessive. I haven’t cut the filter open yet, but if I do I’ll post pics.

I checked on Allison’s site and this is what the fluid and filter calculator gave me:

C96566FF-8A59-4933-8C2D-0738751ACD16.jpegA6222260-C39B-407E-935B-02E90F36F89E.jpeg
Re: [cut open] Allison 29539579 spin-on filter for 1000 series trans in Duramax [Re: wwillson] #4893366
10/10/18 08:28 PM
10/10/18 08:28 PM
Joined: Aug 2003
Posts: 2,275
Naperville, IL
wwillson Offline OP

Administrator
wwillson  Offline OP

Administrator
Joined: Aug 2003
Posts: 2,275
Naperville, IL

Re: [cut open] Allison 29539579 spin-on filter for 1000 series trans in Duramax [Re: wwillson] #4893373
10/10/18 08:33 PM
10/10/18 08:33 PM
Joined: Sep 2017
Posts: 88
Southeast
BlakeB Offline
BlakeB  Offline
Joined: Sep 2017
Posts: 88
Southeast
Originally Posted by wwillson
This filter is from my 2018 Duramax. This is the original spin-on filter with a total of 8,000 miles. There is a small amount of metal flakes in the filter and only enough clutch friction material to discolor the media. I see no reason to change this filter more often than 25,000 miles. The magnet that mounts between the filter and trans body had a small amount of dark material stuck to it - probably a couple grams.


How many hours on your L5P?

Re: [cut open] Allison 29539579 spin-on filter for 1000 series trans in Duramax [Re: wwillson] #4893378
10/10/18 08:35 PM
10/10/18 08:35 PM
Joined: Aug 2003
Posts: 2,275
Naperville, IL
wwillson Offline OP

Administrator
wwillson  Offline OP

Administrator
Joined: Aug 2003
Posts: 2,275
Naperville, IL
190 hrs

Re: [cut open] Allison 29539579 spin-on filter for 1000 series trans in Duramax [Re: DoubleWasp] #4900743
10/19/18 10:33 PM
10/19/18 10:33 PM
Joined: Jul 2005
Posts: 9,113
Maricopa, AZ
dave1251 Offline
dave1251  Offline
Joined: Jul 2005
Posts: 9,113
Maricopa, AZ
Originally Posted by DoubleWasp
My understanding is that most transmission spin-on filters by the OEM are still rock catchers. Better rock catchers than the pan filters, but still around 60-80 microns. That's why I replaced mine with an XG7317.



And yet what is percentage of failed transmissions? Not very high.


make the inside of your engine oil cap white.
don't use.

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