Would THIS be good to soak my rusty crank,lifters and rods in?

 

They sell that stuff at autozone, I've used it for nuts and bolts before. It works good but you have to be able to get the part totally submerged in the stuff for at least a day or two in order for it to work. Probably would work for rods, not sure I'd want to use it on lifters unless you're going to take them apart to rinse them out (the rust kind of flakes off, you'll need to rinse and scrub the parts after you take them out). You'd need a lot of it to submerge a crank in, the little quart bottles don't go very far.