OCR Text |
Show Lubrication Big Need During Severe Weather Cold-weather lubrication is of Immediate Im-mediate importance to all farmers and machinery owners. Few there are who have not had more or less trouble trou-ble lubricating their machines properly proper-ly In cold weather. The reason for this is that the oil that is usually the most satisfactory and gives the best results In the summer does not have a sufficiently low "cold test" to flow freely when the temperature gets down much below freezing. For summer lubrication the fire and flash test cf an oil Is the most important. impor-tant. What a machinery owner wants then is an oil that will stand up and retain its body when his machines are operating at the high temperatures usually encountered on the harvest fields. An oil of the proper fvre and flash test as well as body, to properly lubricate under these conditions, usually usu-ally ha's a cold test running from 25 to 33 degrees above zero. If this oil is used in the late fall, winter, or early spring, when the temperatures are below be-low freezing, it thickens up and If the temperature gets low enough, will solidify, thus making it practically useless from a lubrication point of view, until the machines have warmed up to a point above the cold test of summer oil. Modern refining processes have made it possible to remove the waxes found In lubricating oil which, while necessary to hot weather lubrication, are detrimental to the cold test. The removing of these waxes will lower the cold test of an oil from 1.1 to 25 degrees below its normal cold test. All oil, and In fact any liquid, becomes be-comes solid at some temperatures and even specially cold tested winter oils will thicken up If the temperature gets low enough, but they will thin out quickly and do their job of lubricating lubri-cating properly a half hour before ordinary or-dinary summer oil would be thin enough to be on the job. Winter oils are ready to flow through the pump to all wearing parts of the motor within a few moments after starting when ordinary summer oil would be so thick and heavy that It would be twenty minutes or a half hour before It would be flowing freely. free-ly. The resulting friction and wear on the motor during this time naturally natural-ly causes tremendous damage and is avoided If properly cold tested winter oils are used. All oil should be kept In a warm place so as to make It easy to draw from the container. When using an auto, truck or tractor during extremely extreme-ly cold weather, many find It easiest to drain the crank case at night while the oil is still warm, placing the oil in the house or where It Is warm and putting the snme oil back In the morning morn-ing after thoroughly warming It. This, of course, gives the same starting conditions con-ditions as far as the oil is concerned in winter as in summer. |