What bad things have you witnessed?

I tried researching this awhile back and as scaring as the concept of Phantom Grip sounds, people have yet to show actually data of these things harming your open diff. In fact, some review sites were surprised at how well it worked, held up, and didn't cause "bad things".

The jist I got out of it, was that Phantom Grip is actually a pretty good non-competition way to get a less expensive LSD. For street applications, it's probably great.

(And if any morons out there need the obvious stated Yes, the Quaife LSDs are better, you get what you pay for.