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Penetrating oil
Also called: penetrating lubricant, rust penetrant
A spray that soaks into rusted screws to free them and helps prevent rust. It is not the same as a rust remover, which gets rid of the rust itself.
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When you'd need this
- I can't get a rusted screw loose
- My hinge squeaks
Measure and check before you buy
- Volume
- Nozzle type
- Whether it works as a long-term lubricant
Safety: Caution: keep away from flames, ventilate, and keep it off brake friction surfaces.