dnewton3
Staff member
Finally found the reference I saw on another web board a few weeks ago.
DEX VI is clearly considered a TES-389 fluid; Allison has basically lumped the fluids into a TES-295 or NON-TES-295 catagory.
Still doesn't say what GM thinks of the whole DEX VI vs. TES-295 issue for warranty purposes. However, it is clear that the recommended fluid for severe service is TES-295.
Check this link (hope I'm posting it correctly).
http://www.allisontransmission.com/servl...5&Preview=1
DEX VI is clearly considered a TES-389 fluid; Allison has basically lumped the fluids into a TES-295 or NON-TES-295 catagory.
Still doesn't say what GM thinks of the whole DEX VI vs. TES-295 issue for warranty purposes. However, it is clear that the recommended fluid for severe service is TES-295.
Check this link (hope I'm posting it correctly).
http://www.allisontransmission.com/servl...5&Preview=1