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Using the most ideal packages of additives in engine oils does not enable one to avoid the development of mechanical admixtures of particulate contaminants from fuel combustion byproducts and airborne contaminants. In this connection, one must modernize the engine design to accommodate the removal of harmful particulate contaminants, which exist in particle sizes of 3-5 micrometers or greater [1].* It should be noted that even the most active ashless dispersants cannot accommodate higher and higher concentrations of sludge, soot, and airborne contaminants without eventually losing their ability to suspend these contaminants [2, 3]. As more and more contaminants continue to concentrate in the crankcase, it becomes necessary to change the engine oil. It is known that polar-active species (asphalt-resins) can be absorbed on non-organic particulates [4]. These agglomerates may then be physically separated from the oil with the use of a centrifugal cleaner.