Originally posted by kewlrunningz
UH OH. Hows that?
WD-40 is a pretty nasty solvent. It's an excellent cleaner, for some applications, but a lot of people think that it's also a lubricant, which it isn't. What it WILL do is remove lubricating material from your chain, cogs, jockey wheels, etc., so they grind together metal-to-metal, causing things to wear out much, much more quickly. It's not even very effective for cleaning gunk off of your chain before re-lubing because it's not water soluble and will prevent real lubricants from adhering to yuor chain.
Bad stuff...
Death before WD!