Using WD-40 on a seized bolt will likely provide a slick outer surface, but it will not magically dissolve the rust welding the threads together. The Solvent Component WD-40 contains solvents that provide a temporary cleaning effect and help carry the lubricating oils into a surface.
How WD-40 Penetrating Oil Specialized Formula Differs From Standard Lubricants
The solvents in WD-40 evaporate relatively quickly, leaving behind the lubricants, which means the mixture does not stay in the micro-gaps long enough to exert the sustained pressure required to break heavy rust bonds. Understanding whether WD-40 is a penetrating oil requires looking beyond the marketing hype and examining the science behind the formula.
Simply spraying and immediately attempting to loosen the part rarely yields success. When people reach for a can of WD-40, they are often seeking a solution for a stubborn squeak or a rusty bolt.
Understanding the Specialized Formula That Enhances Penetration
Penetration It is important to distinguish between lubrication and penetration. Penetrating oils, conversely, are meant to be absorbed and to soak into static, non-moving parts.
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