i'm storing my 97 Z over the winter.. i got the basic tips...
1. add stabilzer
2. oil/filter change
3. check coolant freezing point

but theres one thing i'm not to sure.. should i fill up my gas tank or keep it half full or little as possible? the car is going to be stored in temptures as cold as -35celsuis (-45 w/ windchill).. It's in a car port,closed from 3 sides and open from the front. any tips would be great

 

fill it up and add enough fuel stablizer to hold the full tank.
crank it up once a week and let it get to full operating temp and let it idle for 5 or so min to boil off any condensation that may have accumilated<sp>. I would also give it a good waxing

 

what he said.. some will recommend running the gas real low, well be prepared for the car to run for crap in the spring. fill it up, i don't even use stabilyzer, its only 3 months or so. the car runs fine, but i do run the gas low in the spring before refilling, just to run most of the old stuff out. wax it, get a decent car cover (sheets work nicely, all of my family's car use them) but a custom car cover is nice too. Whenever you do start it, if its not once a week or is, let it get up to normal operating temp, a good 15 minutes should do it.