Old...old...really old thread.
I don't use lubricant on Spydercos or any other modern folding knife. Most modern knives have bronze or teflon washers that are self lubricating and they really never need other lubrication. Well, that's not quite true. When the knives are new, they sometimes feel a bit rough, tight and balky on opening. When that happens, a little drop of oil can help smooth things out until the pivot wears in. After that, I just wash out the knife when dirty.