“There’s an astounding number of Technical Service Bulletins (TSBs), and if you’re worried about your specific 10R60/10R80/10R100/10R140 transmission, you can use Ford’s Technical Service Information site to look up your vehicle.”
The Biggest Complaints About Ford’s 10-Speed Transmission (And What’s Been Fixed So Far)
There have been tons of complaints, as well as class-action lawsuits, over Ford’s 10-speed transmission. Oh, and some GM vehicles use it, too.
There is a useful link in the article so have a read….

GHMA All Years Mustang Club