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Show OIL TESTS DECEIVE. SAYS 1UCULMER Low Cold Test Not Indicative Indic-ative of a, Good Lubricant. Just as sure as the winter season rolls around the same old question is asked by the new crop of motorists, "J low heavy an oil should be used in cold weather." The fact that an oil may flow freely at zero is taken by some people to indicate that this fact of itself makes the oil an ideal lubricant, while as a matter. of fact quite the reverse may be true. The question was puL to W. F. Culmer this week, who is recognized as one o( the very few hydrocarbon chemists and oil experts In the west. Mr. Culmer parried the question by saying: "If you are expecting me to disparage dis-parage oils made or sold by any of my competitors, I must decline to answer your question; but if you simply want to know what we base the claim for superiority su-periority of Culco Oils on. I will he delighted de-lighted to use all the space you will give me. "As a matter of fact. I have said so often that it seems needless to repeat, my views are that the only test of value from oil Is, what will it do under normal working conditions? "I would be suspicious of an oil that based Its claim for recognition solely on its ability to flow freely at zero, for, like : we humans, it may 'start easy' and start I something it cannot finish. ' "An oil that flows loo freely Indicate? lack of body or viscosity, and will fail utterly when subjected to the intense heat of the cylinders, and friction Is sure to result. ''I personally use Cresta light the year around in my Buick and get the very best results, and, while the engine may i not start quite as quickly, I consider fast I getaways less important than perfect lubrication once you do get away. "If piston rings are slightly worn, causing loss of compression on light cars, or for general use on heavy trucks. I advise ad-vise using Cresta medium, and only for old and badly worn cylinders and In trucks doing constant work where high temperatures are developed would I advise ad-vise Cresta heavy. "Naturally, motorcycles being air cooled require a heavier oil, but in nearly every Instance pleasure cars will secure better uniform results by sticking to the lighter consistency. "I would also say that the public should pay little attention to the 'tests' of various vari-ous oils, for the terms are seldom understood under-stood and only tend to confuse the buyer. "Buy only well-known trade-marked lubricants from responsible dealers and Insist on a guarantee, is my parting advice. ad-vice. "Of -course. I go stronger than that in the advertising columns and name the oils I think the very best made, but modesty mod-esty prevents me suggesting the use of Culco Oils in this Interview." For fear this "modest" mood of Mr. Culmer might change, the reporter closed the interview then and there. |