I used TRS on an automatic transmission oil pan, it came apart with no drama. It isn't JB Weld, for the love of Pete!
I like it because it sets up almost immediately, you can install the part, add fluids and drive. I've done it, no leaks ever.

It does not like gasoline, will turn into foam when the gas hits it. But for everything else it is indeed The Right Stuff. And no, it isn't cheap, but it works.

R.