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  1. Allison OEM
    Fixing to do a fluid change on the '06 Allison. My S/N is earlier than the cutoff date for Dev VI and unfortunately I did a fluid change using Dev VI. So I plan to do 2 changes a few months apart. So question 1 - for a long time I've heard not to change the internal filter, now I'm reading...
  2. Allison OEM
    Here we go with the debate over changing trans fluid. I have 130k on my Lly duramax and it's proudly ti.e to do a trans fluid change. I'm pretty sure it has been done before by the previous owner because the fluid still has a red color to it. My question is I've always heard that changing the...
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