Duramax Diesels Forum Truck of the Week
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Old 09-13-2018, 06:30 AM
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Default Lmm allison fluid change

So after much neglect its tine to change my fluid in my transmission, im just curious what everyone is running for fluids and if i should just drain and fill and change the external filter or drain fill and drive a few days and drain an fill an change external filter and how much fluid does it take for a fill.

Poor tranny has 126k, this winter im planning just changing all fluids, t case rear diff power steering ect.
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Old 09-13-2018, 09:09 AM
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I use Transynd. I would drain and fill and change the external filter. If the fluid looked really bad then I would pull the pan and change the external filter
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Old 09-13-2018, 10:44 AM
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Where do you buy it, everywhere i find it online is like 48$+ a gallon
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Old 09-13-2018, 12:22 PM
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If its too expensive then just find yourself some Dex 6 for less
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2008 Chevrolet 3500HD DRW LTZ
285/75/17 Nitto Dura Grapplers, 4.56 gears, Front and rear ARB lockers, Efi Live tuning by me, Raptor 160 LP, Cognito 4-6 NTB Lift, 4" Exhaust, Built Trans by Mike L.

2006 BRM Jetta TDI. Injectors, turbo, Malone custom tuning on ecm and tcm
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Old 09-13-2018, 08:38 PM
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How much is needed for drain and fill?
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Old 09-13-2018, 09:37 PM
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Quote:
Originally Posted by Idahodmax View Post
How much is needed for drain and fill?
12 Qts for internal, external and mag pan.
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Old 09-14-2018, 05:27 AM
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Quote:
Originally Posted by Idahodmax View Post
Where do you buy it, everywhere i find it online is like 48$+ a gallon
ATP sells it or Smith Power Products down by the Boise Airport is the local Allison dealer. You can also pick up a spin-on filter for around $8 while you're there.

Another alternative is Delvac 1 ATF that you can find at any truck stop. It too is a TES-295 approved fluid.

Of course, I'm assuming you're in or near the Treasure Valley...

https://www.atptrucks.com/
https://smithpowerproducts.com/
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Old 09-14-2018, 07:11 AM
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No im more central in grangeville about an hr from lewiston
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Old 09-14-2018, 09:57 AM
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Quote:
Originally Posted by Idahodmax View Post
No im more central in grangeville about an hr from lewiston
Gods country! Then most major truck stops carry Delvac 1 ATF. You could also check with the big CenPeCo station there in town...
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