How do you know its going out, what is it doing, what year is it, and how much do you have to spend? Most times its the front snout seal that leaks or the snout bearings get noisy b/c it has run low on oil. Mine was noisy for years and whenever I complained to the dealer, they said that some were just loader than others. Fords manual says that they are not serviceable so they never added fluid. It turned out that it was load b/c they never added SC fluid when it was in for servicing and when I started doing my own servicing I found that it was dry and the bearings were noisy. Both can be fixed fairly easily if you have some tools and know how to replace them. I've helped lots of guys rebuild theirs with no failures that I've heard of. good luck