My response got cut short.....I have to admit, I was lazy about things like that, but after many years of not using it, I saw no reason to start. Especially after overhauling a boat carb to find it absolutely spotless. Two strokes are a different story, but I'm not sure wether the problem is from the
oil mixed in the fuel, or from storing it for two winters. I've smelt rotten gas before, and it's much older than a year when it gets like that. If I was delibrately going to store my car for two winters, I'd throw some stabilizer in it. Probably would use some of that stuff for boats that you spray down the carb of a running engine until the engine chokes and dies. It coats the cylinder walls.
The only thing I make sure of, is to never store a car with the emergency brake on. Just leave it in 1st gear.