Hey all, I am from Colorado. Spend most of my time in the central part of the state as well as some in the southern part. I was down at the southern part for a couple of days and the temps at night hit around 20 below on both nights. I have not added anything to the fuel and only plugged the truck in at night. Start up was fine and it was just a sluggish till it warmed up. I was just wondering if this is enough to do for the truck when it is that cold or if I should take some other steps. Any advice on this would be great.