Also try Kroil for stuck fasteners. Haven't used it myself but several on here have. Then there's the 1:1 mix of acetone and ATF.

Do a search for "Penetrating Fluids" over the past year and you'll find info on "scientific" testing that was done. <img src="/forums/images/graemlins/kewl.gif" alt="" /> <img src="/forums/images/graemlins/kewl.gif" alt="" />