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![]() Join Date: Oct 2008
Location: Wentworth, NH
Posts: 4,927
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Re: 2001 Allison 5-spd Auto maintenance question
Quote:
The 2006 trucks came off the line with Dexron VI in them. Apparently GM recommends Allison Transynd TES 295 for temps below -40° ambient so it does work and it won't hurt the Allison 1000 to run it if you can handle the price. The below dieselplace thread recommends the TES 295 rather than Dexron VI TES 389 is supposed to be exactly the same as the old Dexron III H. Chevron makes it as ATF HD 389. There's a bunch of Dexron VI might do this or that bad thing in this thread. It might, but GM used it and I can't find a TSB warning to not use Dex VI so I'd want to do a bit more research before I take somebody's word for it. https://www.dieselplace.com/threads/...ansynd.318081/ More arguments on BITOG. https://bobistheoilguy.com/forums/th...dex-vi.159697/ Kinda like the religious wars over "my engine oil is better". ![]() ![]() ![]() ![]() If it was my truck I'd run the Dexron VI in it, change the spin-on filter every other engine oil change, and change the fluid at 2x the spin on filter interval and not worry about it.
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1959 M35A2 LDT465-1D SOLD 1967 Dodge W200 B383, NP420/NP201 SOLD 1969 Dodge Polara 500 B383, A833 SOLD 1972 Ford F250 FE390, NP435/NP205 SOLD 1976 Chevy K20, 6.5L, NV4500/NP208 SOLD 1986 M1008 CUCV SOLD 2000 GMC C2500, TD6.5L, NV4500 2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263 2009 Impala SS LS4 V8 RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials...
And please let us know if and how your repairs were successful. Last edited by hatzie; 07-05-2022 at 01:04 PM. |
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