hi, i just signed up with this forum. i tried searching for lubrication, but nothing came up. i just bought an old 1998 schwinn gsx searcher in mint condition. the bike shop must have cleaned everything 'cause the chain and gears look brand new and are bone dry. my question is, what should i use for lubrication for the chain and gears? i have wd40, 3-in-1 oil, and some white lithium grease. first of all, should i use grease or oil? my guess would be to use the 3-in-1 oil. should i get something better? any help is greatly appreciated. thanks!