On Tue, 30 Jan 2007 09:28:00 -0500, "Ernest Scribbler"
wrote:

I found a good Ospho knock-off at Autozone. I forget the name. Green liquid
in a white bottle, near the bondo and such.

Could be, Ospho is phosphoric acid and not exactly a proprietary
formulation. Anything with phosphoric acid as the prime ingredient
should work equally well.