On Apr 12, 2016, at 8:19 PM, drlegendre . <drlegen...@gmail.com> wrote:"I suppose it might do that, but that's not its main purpose. Its main purpose is to loosen rusted and otherwise stuck fasteners and shafts."
That is *not* the main purpose of WD-40, nor does it even work well for that purpose *at all*. Rather, a penetrating lubricant like PB Blaster is for loosening rusted fasteners.
WD-40 is a very misunderstood -- albeit still very useful -- product. - j.
