Well here's what I would do. Since it's so much eaiser to work on out of the Jeep, take out your original, open them both, and compare. You might find the "new" one to be in better condition in spite of the funky fluid. use whever one looks the best as far as wear and tear. Keeping in mind the time you'll save if you don't need to swap out OP shafts. <img src="/forums/images/graemlins/cheers.gif" alt="" />