Quote:
Originally Posted by hliu42
Good point jdd  , I might keep searching some good place who can explain to me what they gona to do. also I will ask BMW to see what they gona suggest to me. thanks!~ 
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Do you want to hear that changing fluid is a good idea on a high mile car? No one is going to say 'its a good idea', the best they can say is that they did it and it didn't kill
their transmission.
But like you have discovered, the cases of woe are like 50:50. That in itself telss you something - it tells you there is risk in doing the change and so you need to weigh up what you would gain from doing it.
If it were me, if I was having problems that indicated my transmission was on the way out anyhow, then I would think what do I have to lose.
If my transmission was fine then I wouldn't mess with it.