Cold Storage - Car cover or not?

[camarojoe]

I have a very hard time pouring anything into my gas tank but gas. I have stored cars for 6 months a year every year since I was 16 years old, and have never done anything but fill them to the top and forget about it. Usually it's either straight 93 octane or a blend of 93 and 115 racing fuel, depending on the car. In the spring they always fire right up and I use the 6 month old gasoline with no noticible difference from when I put it in there in the fall. Maybe i'm just lucky, but I've never used Stabil, or anything of that sort, and have never had a problem. Maybe if it was stored for a year or more things would be different.