how does WD40 dissolve rust on tools and metal?
In: 36
It doesn’t dissolve rust. It is a light oil with some solvents that can act as a penetrating oil. A penetrating oil is a thin oil that can slide between parts to help loosen them. This [Shows some tests to demonstrate how it works ](https://www.roadandtrack.com/car-culture/buying-maintenance/a21968757/penetrating-lubricants-explained/)
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