Service for your Allison, what do you guys do and use? - Page 3 - Chevy and GMC Duramax Diesel Forum
Maintenance Discuss scheduled maintenace, capacities, filter part numbers, etc.

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post #21 of 24 (permalink) Old 12-29-2019, 07:28 AM
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is it OK to mix whats in there from stock (2015) with TES-295 syn by just draining and refilling.
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post #22 of 24 (permalink) Old 12-29-2019, 07:32 AM
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Compatible, yes.

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post #23 of 24 (permalink) Old 12-29-2019, 03:46 PM
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change out external oil filter , allison genuine filters are best and then dump and refill with mobil one atf tes 295 compatible. two gallons are more then enough for just that. no need to change the internal filter till you rebuild the trans

2006 chevy 2500hd 4x4 cc/sb lbz
5" flowmaster and edge with juice and afe intake with dry filter.Front grille leds and lt275/65r18e falkens
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post #24 of 24 (permalink) Old 12-29-2019, 09:28 PM
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I used transynd, a deep Allison pan and Allison Filters. Easy, simple, done. If you would like a bit more performance, look at Transgo Jr. Kit.

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