OK. I'm new to this. I recently purchased some additional equipment, and I got tire of having to run into town to fill up five gallon cans every day. Our ranch is in rural Texas and a round trip to town take a minimum of an hour. Short is I bought a 200 gallon tank, got my permit for farm diesel, and got it filled. We are in Central Texas south of Abilene. Fairly dry, and usually not terribly cold. I know that I need to put additives in the tank, but what do I use and how much of it?