The border vidette., 1918-03-09
HEART TO HEART TALK.
Zero Goal Test for Motor Oils Of ln-
 terest to Motorists.

chert, automobile engineer of the Standard Oil Company, will be of interest to readers of THE BORDER VIDETTE, who use 1ubricating oils:
 We know that correct lubrica tion is the most vital factor in During this cold weather we find that our motors do not respond as quickly as is the case during the summer. Lubrica ting oil is partly responsible for this condition. This annoyance of a sluggish and inefficient motor can be largely eliminated by the use of the correct oil.
 For correct cold weather fabrication the Cold Test of a motor oil is most important feature. Upon it depends very largely the fexibility, power developed, fuel consumption, and wear and tear of the motor.
 The Cold Test of an oil is the lowest temperature at which it will flow; for instance, if an oil has Cold Test of 30 it will pour at that temperature and become solid about lower.
 Oils that congeal when the wheather is at freezing point, or at 32 F., are not suitable for fabrication during cold weather because the resistance offered to the Sheering of the film is high, for we learn that the value of lubricating oil depends upon it's huidity at the temperatures at which it is used; that is, a fluid oil or one having a good Cold Fast (preferably Zero) will offer very much less reSistan to the sheering of the film than a thick or sluggish oil or one which has a poor Cold Test and is in the condition of jelly in the crank case.
 We know that all gasoline engines start hard in cold weather because the fuel does not vaporize as readily at this time as it does during warm weather, taxing the batteries to their limit. If poor Cold Test lubricating oils are used, the additional power necessary to turn the motor over is very materially increased, which means rapid draining of the batteries and, consequently, expensive upkeep.
 Again, if an oil of poor Gold Test is used or one that con- goals in the oiling system during these cold mornings, it will not lubricate the motor correctly because it is too thick or slug gish to pass between the close fitting bearings, and if used in a motor which is partly or wholly fabricated by splash, this oil will not be splashed to the cylinders, pistons, and wrist pains in sufficient quantities to insure adequate fabrication until the motor has been run from 15 to 30 minutes and the temperature of the motor has thinned the oil down, during which time exces- Sive wear of the moving parts is taking place which means not only expensive adjustments and repairs, but also excessive fuel consumption, and a sluggish and inefficient motor.
 This also applies to fOrce-feed oiling systems, for oils of poor Cold Test offer considerable resistance to the passing of the oil through the pipes and hollow crank shaft to the bearings, and the oil does not circulate freely enough until it has thinned down.
 Another condition which shows the inefficiency of poor Cold Test oils very plainly to the operator is the necessity for frequent gear shifting.
 Eastern refinerS and motor car manufacturers recommend light oils for winter and medium oils for summer lubrica tion, realizing that oils of poor Cold Test can not be used successfully during cold weather. They are compell- ed to do this because light East ern oils have better Cold Test than medium bodied Eastern oils.
 Motor oils correctly manufac- tured from California Asphalt Base Crude have natural Zero Cold Test, making them the correct oil for use at all seasons of the year.
 Using Zero Cold Test oils gives the necessary margin of COIl