Wait I'm confused, lol so are you suggesting to get an oil change before winter? That contradicts the oil change. Nice mustang btwManual also says to change your brand new oil before fire up too for extended storage. So basically - Fall change the oil. Let that brand new oil sit all winter. Then change that Brand new oil in the spring with brand new oil. Sounds legit.
"to summarize, oil does not "spoil", and non-use certainly doesn't sever the long chain molecules. Yes, moisture that accumulates from combustion by-products should be vaporized off once in a while, but oil is not hygroscopic, and extended storage will not add bad things"
And that moisture will collect at the bottom of the oil pan.
So how is particulates sitting in a oil pan any different than those same particulates circulating throughout the engine. All of it passes through the filter before going to vital engine components.
Also with modern synthetics, the risk of oxidation or acidity in super minimal at worst. Just wanted to see who still subscribe to the 1970's era.