This is an old thread but worthwhile to help newcomers:
*Before parking for 5+ months I top off the
fuel tank to keep moisture from accumulating. But before filling up I add a
fuel stabilizer to keep the fuel fresh. Then drive it at least 4 miles to be sure the mixed fuel and stabilizer is throughout the fuel lines
*If your garage floor was poured without plastic underneath the concrete, cover your floor with a sheet of plastic before parking on it. You’ll be surprised how much water accumulates under this sheet. Personally, I prefer and use a 9’ x 17’ rubber ribbed parking mat.
* I also put 4 pieces of plywood 2’ x 4’ under the wheels to prevent any moisture getting on the tires. Be sure that the tires are at correct pressure, since they naturally may lose some pressure over the winter.
* I cover the two wheels that face windows with black plastic garbage bags to keep the tires out of direct sunlight since rubber is sensitive to ultraviolet light, and prolonged exposure to
UV light will cause the tires to eventually crack and split.
* For the interior and trunk, it is good to leave either “Bounce” laundry sheets or mothballs inside to repel potential critters, or one of those electronic critter repellers plugged in. - If these are issues either put steel wool in your tailpipes or cover them as an added measure .
* Finally, before I cover the car, I connect my
Battery Tender and leave it on for the storage period. Then drop the lid on my Cali duster to hold the trunk ajar. If you do not have, or want a
battery tender, be sure to remove your battery or disconnect the cables.