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Originally Posted by Yellow650
...wd-40 is a SOLVENT, not a lubricant. It will clean things quite well, but after that it acts more like a degreaser than a lubricant...
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Quote:
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Originally Posted by alpinestarhero
Ditto. For more detailed explanation of why it isnt a good lubricant are:
> Its not very viscous! It wont act like a "barrier" between moving parts in the same way a thicker, dedicated chain lube will.
> Volatility! It will evaporate quite easily, even at moderate tempuratures. With the chain moving, generating heat, the WD-40 will be gone in no time
Matt
P.S correct me if I'm wrong, but this is what i have observed!
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C'mon now, think there's some dis-information going on here. WD-40 is a combined degreaser/lubricant. That means it has oils and lubricants are mainly disolved in solvents, which act to clean and de-grease parts. The solvents, however are pretty volatile, and evaporate readily at room/garage temperatures, leaving only the lubraicants as residue. That said, all the grime and dirt you disolved wont be evapourating off with the solvents, so unless you apply, clean, then re-apply you're gonna end up with much the same mixture of oils and grime that was there before. As it comes in the can, it's not very viscous, but spray some on your brake disk and tell me it's not a lubricant...(dont try this at home kids...)