Well, in gutting my brake system and rebuilding the wheel cylinders I cam across two wheels that would not come off. Liberal amounts (multiple times) of PB Blaster and the new WD40 Rust Specialist did not do anything. Leaning on a 6 foot cheater bar only resulted in a busted 3/4" breaker bar. Pounding them with a 24V Robo Impact eventually ran the batteries down. Heating with a propane torch was next to useless, but didn't do anything as well. So I bought a fabled torque multiplier and gave it a shot. As tightly wound as I had the handle, I was worried about A) it exploding catastrophically, B) Breaking something loose that was not supposed to break loose, C) causing the thimble to rotate in lieu if the outer lug nut, or D) loosing parts of my arm when I lost my grip and it rebounded. My last resort was to make a concoction that I heard about that was "guaranteed" to loosen any rusted nut...if that didn't work, I'd be calling out fleet service to break or cut them off and pay a ridiculous fee for the house call. So I stole some of the wife's nail polish remover (100% acetone), mixed it 50/50 with automatic transmission fluid and added a half a shot of French brandy as an offering to the gods. I put it on the lug nuts and waited a few minutes. Then I hit it with the torque multiplier again. After I was nearing the scary part of having it tightly wound I heard a loud crack. I thought I had broken the torque multiplier from too much force. Checked it out, and nope, all seemed fine. So I put it back on and my continued cranking resulted in several more loud cracks that did not sound all that great...but the lug nut was now loose. Hit the rest of them and all came off after a series of several loud, unsettling cracks.
Never heard of acetone/ATF before, but did read a significant explanation of the chemical process that the acetone does to the rust and the ATF is the vehicle for getting in the threads. The alcohol apparently does have a use in getting rid of water that results from the chemical process.
Is it BS? Beats me...but I can tell you that nothing else worked and that they ALL came off relatively (several minutes versus several days) quickly after adding it Its certainly cheaper than PB Blaster or Kroil. I put the acetone/ATF concoction on the other wheel, but I'll wait until tomorrow to break them free...see if is easier after more than 12 hours. Personally, I'm sold.