If your chain starts squeaking, you should have re-lubed it sooner.
I've had pretty good luck with T-9 just re-lubing it after rainy rides, but I don't know how that translates into winter schmuck. It seems to work well as a rust preventative and lubricant. The biggest problem I have with T-9 is trying to wipe everything clean -- I usually end up scraping jockey wheels clean with a screwdriver halfway through the life of the chain.