</font><font color="blue" class="small">( i have never added anti gelling to diesel, why don't i have that problem and why do others have it? )</font>
I buy my fuel at a gas station near here. They treat the diesel to work with the weather, and I never had any trouble with it.
Several years ago my CUT was in the shop, so I borrowed a "real" tractor from the in-law's farm. It was fun for a while, tooling around on that HUGE tractor. It ran OK for about an hour, then quit. It became quite a lawn ornament till the weather warmed up. At the farm, they kept two diesel tanks - one for road fuel (treated) and another for farm fuel (untreated). Guess which tank the fuel in that tractor came from. It surprised me it ran so long before stopping, but the sun was going down and it was getting colder. Must have made just enough difference when the mercury went down a few degrees............chim