This is something i have done, and if anyone thinks I have trashed something, let me know.
when I got my truck, the steering shaft at the rag joint was leaking a small amount, enough to keep the corner of the frame wet with ps fluid. By accident one night, I put maybe an ounce of brake fluid into the reservoir. Only after I cranked it and let it run, did I realize what it was. I figured it wouldn't hurt too much, since it was leaking out anyway. Turns out that the leak has totally stopped. The shaft seal, steering box, everything is dry. The only thing i can figure is that maybe the brake fluid made the seal swell enough to stop the leak.
If anyone else has heard of anything like this, chime in!
Also, I have heard that if you have bad valve seals, you can add a little atf to your engine oil, drive for 1-2 hundred miles and change the oil, and the seals will either leak less or stop leaking. (old used car trick)
