I live in Canada's snowiest city... and our seasonal plates expire Oct 31st.... so my roadster went into winter hibernation on the weekend
Here's my prep...
Check & fill all fluids
Full tank of gas - with fuel stabilizer
Full detailing inside & out - tires dressed too.
Battery unhooked
Windows cracked 1/4"
Dryer sheets inside the car - repells mice
Steel wool in the tailpipes - keeps critters out of nesting mode
4 open baking soda containers (I put them in a big plastic container) in the car - absorbs musty smells & keeps things fresh inside
Car cover
Remove PL/PD from insurance
Mine stays in a heated storage facility with security and fire protection
... & Critter control...
Any others in the same boat? Any other steps in your prep?