Black tranny fluid

[Locutus]

I have a TH350 that was pulled out of another project car I have. I was planning on putting it in my truck as the one in my truck is gone(it will only go in reverse). To make a long story short I was changing the filter and the tranny fluid in the one from the project car is a very dark color almost black. As I remember I thought the car drove to its current resting spot with no slipping in the tranny. What I need to know is does the black tranny fluid spell impending doom for this tranny. I don't want to put this one in to only have to change it out again in a few weeks. Should just take this one up for a rebuild?


Mike


PS not that I trust the PO of my project car but he said this one was rebuilt and only had 1000 miles on it