Okay folks, I got the rust-solve stuff earlier this week and had a chance to try it out on some small parts last night. I let them soak overnight and when I checked them this morning they looked...okay. I placed a few parts with mostly surface rust in the solution to soak and most of the rust came of in solution, some of the rest came of with rinsing, and even more with some light scrubbing. However, there is still some rust left on the parts. It seemed to work better on the cast parts than the stamped steel parts as well.
My conclusion, works okay for small parts, but I don't think it is a replacement for sand/media blasting on larger parts like a frame.
Anyone else try it out yet?

55 1st Series 3/4 ton