I have been pondering about whether to do a fluid/filter change in my 94 bird. Normally I wouldn't have any doubts about doing this, but after searching and finding mixed results about whether it will hurt t he tranny or not and my brother just changing his fluid and filter in his car (C4) and then his tranny going out has got me a little skeptical. The last time I changed it was a little over a year ago, when I first bought the car. I have probably put about 30,000 miles on it since then. The odometer hasn't worked since I bought it and I would estimate it has about 150k on the clock. Should I change the fluid/filter or just leave it be?