Winter Cycling - Steel frames & Winter cold?

I just bought a new steel frame road bike as an additional commuter. This bike will be for dry conditions only as in no rain, sleet, hail or snow. Do I have to take any kind of precautions with the frame due to "outdoor cold, indoor heat, outdoor cold & indoor heat cycles? Leaving the bike outside is not an option.

I've heard of people saying to spray WD-40 or Frame Saver (http://www.universalcycles.com/shopping/product_details.php?id=7824&category=1790). Should I buy the Frame Saver?

Use Framesaver and worry not.

A drainage hole at the bottom of the BB shell prevents internal rust.
Use framesaver inside a nice frame but I find that WD40 is good enough for a beater.
Dont forget to wax the outside for protection.

I use framesaver on all my bikes.

I don't worry about the heat-cold cycle with tig-welded or lugged frames, but if I had a fillet-brazed frame I could get paranoid about it. :)

If you are only riding in cold dry conditions with the bike then nothing extra is needed. But how many winter days do you get that there is not atleast melting snow on the roads. I think atleast some WD-40 in any frame tubes you can get too would be a good idea. Especially around the bottom bracket. I would also suggest removing the seat tube and bottom bracket and reinstalling them after a good application of grease. The biggest long term problems with steel frames in the winter is having one of those two parts becoming stuck due to rust.

Craig

Another one for Frame-Saver. The cold-hot-cold-hot cycle might lead to condensation inside your frame.

BTW, I use steel frames all winter, Frame-Saver my bikes and have had no problems.

Frame-Saver it is, thanks for the replies guys. :)