As Pat said.
Plus....The actuall issue should not be one that is found over just a winter. The problem accurs over a far longer period, something more like two years. The problem is that the oil on the cylinder walls eventuall disappears completely. You then have an aluminium piston, steel
alloy piston rings and yet another type of steel
cylinder liner. Add a little moisture and perhaps some acid residue(it doesn't take much) and add some time, and you get the whole shebang corroding. Worst case scenario is that the cylinder wall can get etched and pitted where the rings are in contact. Often the result is a slightly siezed motor
, although it is usually easy to unstick them and make them rotate again. It is the possible etching damage that can occur that is the biggest concern. So etc oil of any type down the bore is helpful, along with the intake being plugged by a rag to keep air flow and thus moisture out. A dessicant bag down the intake is very helpful as well. The idea of engine makers suggesting a specific oil, is because it burns easily and helps with restarting at the end of layup
. Unlike lubricating oil that does not aid restart and will blow lots of blue smoke till it burns away.