Bio-Bor is what I use in the boat tanks during the winter. It is made by Racor, I believe. Supposed to stop the formation of algae at the junction of any water and the fuel. Most important to be sure the tank is full of fuel, as it is a partially full tanke where the condensation occurs and causes water in the fuel. I cannot comment on whether you should use winter fuel, or not. Other than to say if it is in a heated garage then probably just regular fuel as I assume you will not start it up until the spring. Unless you can do as suggested above, and go for a longish drive, I wouldn't start it up at all. You are just going to give yourself more "dry starts".
You might also consider putting it on blocks or jack-stands to get the weight off the tires and springs.
On start-up, in the Spring, you might consider cranking it for a while to get the oil circulating, and the pressure up, before actually starting it. That would entail activating the fuel cut-off solenoid for the duration of the cranking. I don't know how you would do that on your truck, I have a momentary switch on the dash on the boat, so it is easy. Maybe, over the winter, you can find out how to do that. Perhaps there is a lever that someone can hold over while you crank?
Good luck,
Ian