Slightly OT but mercury was mentioned above and got me remembering this site for all things chem/sciencey: http://unitednuclear.com
I generally prefer solvents for cleaning and lubricants for lube; I'm not a fan of the combination CLP products, although I do use CLP in the field. Mark K, your experience with CLP intrigues me (I somehow missed your #57 when reading through the thread earlier).
Based on the results posted at:
https://www.youtube.com/watch?v=WdYWQfbC5Og, I wouldn't expect CLP to have a chemical advantage on lead. Possibly due to different manufacturers' CLP formulations, possibly due to penetrating under the lead...