Granted I don't crawl underneath looking for a problem so I suppose it had a tear in it...

Car was washed as well last week. No observable boot failure but it may have had a impeding tear that was opening...

Ha. Talk about placebo. Between 15-50K or so, I have done 2 bolt drain trans fluid, and 1 pan drop trans fluid. I think around 300 miles or 3000 miles on the 3rd fluid change, the trans went out on me. I can't say for sure if preventative maintenance on the trans paid off or not.