same for just about any car. Go to any auto part sore and get some gas preservative and put in tank as presribed for how much gas you have in there then run it in idle for 5-10 minutes to make sure gas in lines is all treated. I have tried taking the battery out and putting it on a trickle charger to keep it charged, but that allways seems to be not good on the battery.( i have has roadsters that I have put up every winter for 38 years). so this year I just go out into the garage about every 3 weeks, start it up and let the the altenator keep the battery charged. I am assuming that it will charge at idle. Batteries do not like to be let to run completely down. When I did the remove and trickle charge the batteries never lasted more than two years. You can move the car a few inches back and forth to keep from flat spotting the tires as well. But I have never had a problem with the tires when I didn't move it.