WD 40 is lousy penetrating oil. Try kerosene, or, if you can stand the smell of it, Kroil. That stuff comes in both spray cans and dropper cans like 3in1. The smell of Kroil kinda turns my stomach, so whenever I have to use it, I do it outdoors. But it is the best penetrating oil I have ever come across.
Posts: 213 | Location: Westminster, Maryland in the USA | Registered: March 02, 2015