My local diesel supplier was closed for a couple years due to a death. After 11 lawyers picked the bones like vultures, one of his sons has reopened it. They will sell winter fuel when cold weather sets in, but not yet.
For me, last winter did not go well. The bull dozer gelled. I went to cut wood, couldn't get the starter to even turn it over. I dosed it with 10 gallons of kerosene. Brought the batteries inside, charged them, warmed them. No good, now it turns, but doesn't start. I warmed it with a propane heater, changed filters, dosed new filters with additive. With LOTS of difficulty, it started. It must have run two hours before it suddenly ran like summer!
Next try, it still wouldn't turn over. Battery load test said fully charged good batteries. I started dismantling, and following the cables looking for resistance. I believe in voltage tests across any suspected resistance. Plus battery to starter, master switch to negative battery, short cable from master to frame. 28 bolts, 1 seat, 2 hydraulic hoses later, there it was: The bolt securing the 2 year old ground cable to the frame was scrubbed down to bare metal on both sides of 1/4" steel plate, coated with noalox , a shiny new terminal, and a Nylock nut. The nut was just started. I knew immediately the source of my anguish; my son's cell phone. I am sure it rang, he got distracted, forgot to tighten the bolt.
I bet that happened to Space Shuttle Columbia.
This winter the electrical system is in perfect working order. I intend the fuel system to be likewise.