Feel like wasting $26+ dollars? Well, if so, try POR15's
POR-Strip
Here's what they say--
POR-STRIP ® Paint Remover/Stripper is a clear spray-on remover with the consistency of water. In sample testing, our POR-STRIP ® was the choice of professional auto strippers. A special chemical-resistant spray bottle allows you to use less and finish faster than brushing. Remove any coating from any surface without damaging window glass, chrome, or weatherstrip. POR-STRIP ® is nonacidic and will not harm aluminum or factory fiberglass.
On a recent order, I bought a gallon of this stuff along with some POR15. My plan was to strip the black enamel off of a bumper I'm working on. After following the directions on the package, I didn't get any paint stripping results... so I tried it again, and AGAIN! Paint not removed, not loosened, not anything. So, just in case this bumper had been painted with some kind of super paint, I decided to try the stripper on part of a cab I'm working on. Same thing... 3 separate attempts at following the instructions (instructions call for 2 separate coats, so we're up to 6 coats in all) and guess what? The paint is still there. It did manage to bubble up a small swath of uncoated body filler and burn my skin a bit when the "free chemical-resistant spray bottle" managed to spring a leak in the trigger after about a dozen pumps.
BTW, they were right about not harming anything... including the paint I was trying to remove.
As for being nonacidic, I am going out to the garage to re-read the label in a little bit. I seem to recall that the product contained muriatic acid.
Kenneth