Abstract
IT HAS FREQUENTLY BEEN OBSERVED that the average domestic motorist is apt to take the lubrication of his car for granted and pay less attention to the quality of the oil and drainage periods than the lubricant supplier would desire. Insofar as this criticism may be justified the motorist is undoubtedly influenced by the efficiency of the lubrication system of the modern automobile, its mechanical perfection and robustness, the dependable quality of the lubricants available and, at least with regard to the engine, the simplicity of oil prescription. This latter advantage is duo to the modern, additive treated, all seasons motor oil.

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