Quote:
Originally Posted by chief38
I have had such success with Kroil that I would not mess with anything containing Acetone.
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If you look at the MSDS for AeroKroil, you find it indeed contains acetone, albeit in a refined form (isobutyl ketone), as do practically all other similar solvents (PB Blaster, Liquid Wrench, etc.).
Acetone, or derivatives of, is what provides the "creep" or penetrating effect for all these products. When you look at the list in the OP, we find that the more acetone the products contain, the more penetrative they are, hence requiring less torque to loosen the nuts.