I've used the car jackets for years now also, excellent way to store in cold climate. I've worn out the dessicant in the past and have used oil dry for moisture absorption and it seems to work as good as dessicant....and cheaper. I spread a couple inches out on a cookie sheet, heat in the oven for a couple hours to dry it out and put a couple cookie sheets in the bag with the car.
I'm storing a car for the first time this year with bias plays and going to try these for elimination of flat sporting. Hopefully they help??
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1