I ride a steel bike through the winter, but I also wipe/wash it down more than most take showers. I do a mini tune up after ever ride. Go through all the gears, clean off front and rear derrail. clean off front and rear chainrigs/cogs. spray some lube on both. Lube nipples on my rims, (true if nec.) clean off rims, whip down frame fully. Put lube in where screws/nuts are. Such as the stem or brakes.