Is full maintenance and service to your equipment before storing for the winter months enough to prevent corrosion and rust? How best can you ensure that there is no deterioration of equipment performance in the future?
As Wildlife noted, it tends to vary a lot by region - and the piece of equipment (which should include storage information in the manual - if one is available).
For me and my equipment "winter storage" is just parking it under cover for roughly three months as it rarely freezes here in North Alabama and about the only reason I even park equipment for that long is winter around here is a lot like a cold monsoon season. Where it's occasionally just too wet to even walk across the yard without making a sloppy clay-based mess.