Interesting info I saw today that is applicable to what people are offering here:
Removing Rusted Bolts
Mike Cyr, of Presque Isle, Maine, wrote to me about an email he'd
received from a relative. Evidently there was a study done by
Machinist's Workshop magazine in their April 2007 issue. The story
looked at the different penetrating oils to see which one did the
best job of removing a rusted bolt by measuring the pounds of
torque required to loosen the bolt once treated. If the study was
scientifically accurate, it turns out a home brew works best!
Here's the summary of the test results:
Penetrating oil ..... Average load
None ...................... 516 pounds
WD-40 ................... 238 pounds
PB Blaster .............. 214 pounds
Liquid Wrench ...... 127 pounds
Kano Kroil ............. 106 pounds
ATF-Acetone mix....53 pounds
The ATF is an acronym for automatic transmission fluid. You can
readily get acetone and ATF, so mix some yourself and see if you
can get the same results. Thanks for sharing this, Mike!
This comes from a cool newsletter that I recently signed up for. Some people around here might find it helpful as well:
http://www.askthebuilder.com/Newsletter.shtml