What is a liquid wrench?
This name has become a household word for a class of lubricants whose main purpose is the ability to penetrate the smallest gaps of threaded joints that have “seized” together, to soften the rust binding them, to lubricate the friction surfaces where possible and to make it possible to undo a nut or bolt that seemed to be “welded” solid. When creating “liquid wrenches”, therefore, developers give priority to exactly the penetrating ability of these compositions, often deliberately sacrificing lubricating properties.
