I put some of that in my car awhile back and someone was telling me the other day that it was a bad idea, but couldn't explain why. . I don't want to end up with a leaking rack though, so I was wondering if anyone else is running their PSF and how badly it turned out

 

I have used their products off and on over the years and never had any issues. If it is not leaking now, I would not think it would be a issue. Good luck and keep us informed.