You'll find as many ways to lube a chain as there are riders, so don't get too hung up over it. ProLink is supposed to be good. There are a few lubes made specifically for wet conditions. I certainly don't lube every ride. Just when the chain looks dry or gritty (and then I clean it first). Too much lube is not good, so lube sparingly and wipe off the excess to avoid attracting grit.