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don’t change transmission fluid ??

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  • #539685
    paulpaul
    Participant

      my brother was working on my car today and was telling me not to change the transmission fluid because it would seize up in about two weeks he gives it. I don’t understand why this would happen. I’ve changed the transmission fluid when it was at the 30,000 mark and now I’m changing the transmission fluid at the 80,000 mark.. So I don’t understand. :blink: :blink:

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    • #539736
      redfuryredfury
      Participant

        First of all, that’s nonsense. Unless you are experiencing transmission issues, you are supposed to change the fluid. It doesn’t go bad, but it gets contaminated/burnt depending on usage.

        If you were to buy, say a 1988 Pontiac Grand am with 288K on it and the tranny fluid looked as black as the engine oil, then I’d say don’t mess with it, because you will lose the tranny in short order as the new fluid will act as a cleaner and start breaking down all the deposits inside the transmission and start circulating them through the valve body or wherever they can get to and start to wreak havoc within. ( ask me how I know this 😀 ) This was after a flush machine and a pan drop and filter change btw.

        #539889
        ChrisChris
        Participant

          Typically the rule of thumb I’ve seen, if it’s been regularly maintained, go for it. If you wait til say 100-120k mi and then you change it after towing trailers or use and abuse… eh… eh… treading on thin ice in some cases.

          Then again, I’ve replaced the fluid on a car with 190k, unknown history since 60k, didnt have any problems aside from the typical P1887 that there was a TSB out for, and it didn’t get better or worse.

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