So I am wanting to flush out all the rust and dirt from the inside of my frame rails and was wondering if anyone has had any success with this. My plan is to flush out the insides and I’m going to pour a bunch of rust converter inside and drive around to spread it out and finally drill a few small holes in the bottom of the frame to allow future water to drain out. My frame is in good shape rust wise and I want to keep it that way because I live in the rain / snow/ salt belt.