Does Changing Lifetime Fluid Kill Transmissions?

[Elekta]

I'm thinking I will get a used tranny here to drive around in and then send mine off to kirt for a rebuild, then sell the used one, or the rebuilt one, if it turns out the used one is fine.

Those aamco guys were pretty adamant about it being pretty impossible to only fix one thing on a tired tranny just to save money, because eventually you will have to totally rebuild it. That said, trust is truly a four letter word in the tranny rebuild business.

[grave77]

sometimes the used trannies work good and you don't need to rebuild yours, after all, a bad valve body will make a rebuilt tranny perform bad. I have rebuilt my 850i tranny and they were not able to do anything more than cleaning the valve body of the tranny and it still changes the speeds roughly. so I'm planning on getting a used tranny with a warranty, change the ATF then drive it.