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Show SHOULD ADAPT " OIL TOJEATHER Declared Matter of Common Sense to Refer to the Lubrication Charts There -arc very few engines that can efficiently use the same grade of cylinder oil in the winter as In the summer, says the most recent issue of Motor Life Magazine. Oils become more viscous or sluggish In cold weather! It Is merely a matter of common sense 10 refer to the lubrication lubrica-tion charts furnished for the particular particu-lar brnd of oil you use, and make sure you arc operating the engino with the grade specified for your car. In most cases, too, the oil refiners have gone so far as to specify the grade best suited for each different mocel or year of each make of car as well. Change tlio Oil. More" Important, too, In winter Is absolute adherence to the rule of changing ihe cylinder oil completely about every 500 miles. In cold weather weath-er there is les3 likelihood of the motor fuel reaching the combustion chambers cham-bers in properly vaporized condition, fully mixed wltji the air. There is apt to be more or less gasoline in raw state carried along with the rest of the charge, and the more so because the use of the strangler or choker on the carburetor tends to send undiluted gasoline direct to the cylinders. Very likely the cylinder walls and combustion combus-tion chamber are at a lower temperature tempera-ture than the fuel mixture, which results re-sults In the condensation of tho free fuel on the cylinder walls. This condensation con-densation eventually tend? to work Its way down into the crank case, there diluting seriously the lubricating oil. If Engine Is Worn. This Is all the more pronounced with worn engines, where,tho leakage between pistons and cylinder walls is considerable. Often tho oil gauge may bo deceiving you into thinking the oil Is all right merely because the level Indicated in sufficient. As a matter of fact the mixture in .he crank casei may be almost useless as a lubricant as a result of this dilution, and while the gauge may show plenty of liquid! where the oil ought to be, the chances arc it is a dirty slush that is good for I nothing, unless you have been mak- Ing a practice of complete oil chango every 500 miles. 1 - -1 1 |