Thanks for the ideas. The neck has a long curve to it, so I dont think it would fit in a PVC pipe. I only bought a gallon of the Evaporust.
What I was hoping is somehow to plug one end of the filler neck, pour the solution into it and let it soak standing upright. I am unsure what I could use to plug the end, though. Maybe a balloon? Or would Evaporust eat it up? humm.... tinfoil with a rubberband? maybe one of those Fernco fittings?like a cap> it is black rubber
