"the bolt i tried it on is still damp looking 2 weeks later. " Yeah, it's probably still seeing double too!

The other mixture I mentioned, ATF & diesel, works very well on extremely heavy corrosion. Had to re-tool a concrete pipe plant, one extremely harsh environment, and I mixed some up to help with teardown. Nothing else available there. It worked great, and lots cheaper than the aerosol can stuff too.

I'm gonna mix up a batch of this other stuff & test it out.