When I got out of the army, ethanol was not an additive. Real diesel, real gas. its been 25 years.
Here is a story from WW2. My Father in Law was in the Wehrmacht. He spent 3 and a half years on the Russian Front, wounded three times. During the winter of 1942, the temperatures dropped to under -35 or -40. Nothing would start or run . At the time, the Germans had around about 1 million Russians in the German Army, They were call HIWI's, for Hilfswillieger, for voluntary helpers. In his company, there were about 40-50 Russians. The company was in some small village, and could not get even one truck or half track started. One of the Germans asked a HIWI how the Russians managed to get trucks and tanks running, when they could not. The HIWI told everyone he would be right back. He came with a 20 ltr. fuel can and opened the hood of the half track up and poured a little in the oil reservoir. By then, the Germans were starting to get uneasy. Then the HIWI poured the rest of the fuel into the engine compartment! And struck a match! Everyone drew pistols, rifles and machine pistols, and were ready to blow the guy away! So he jumped down into the middle of the Germans and screamed to "Stop, wait, I show you" and so forth. The fuel didn't burn too long. The HIWI jumped up into the cab, and started the half track! The rest of the winter, the Germans started all the vehicles in a similar method. Was hard on the paint, and you had to make sure to avoid the wires, but it worked.