Fight, hello: after the joke, it happens that diessel engines, to take advantage of the tendency to "auto ignition of gas oil", work very well to "hot" engine and high pressure, in fact, injects the fuel into the piston head, that the hottest place in the set, evaporates instantaneously and by pressure, explodes, with the cold engine, arrives and no matter how much you spray the liquid, the temperature factor is missing, although it has a heater in each cylinder, at very low temperatures of the whole set, sometimes not enough, in the old tractors, in the middle of the field, they lit fire