fuel additives for winter storage?

This has worked for me for the past 7 winters: Fill tank to about 2/3 to 3/4 full with fresh 93 octane 10% alcohol gas (the best we have here), fill a 5 gallon can with the same gas, add the appropriate amount of Griot's Fuel Preservative to the can, mix thoroughly, and dump it all into the gas tank. (Stabil is also O.K., but not my 1st choice.) Then start the car and run it a few minutes to get this mixture into all the lines and the carb. Come back in the spring, and start it up and drive it like normal. Like I said, I have never had any fuel related issues by following this procedure.

Note: do not just put the Stabil/Griot's in the tank. It must be mixed with a good quantity of gas first, or it won't work.