LUBRICATING OIL COMPOSITION FOR FOUR STROKE ENGINE
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United States of America Patent
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Mar 31, 2016
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Mar 31, 2015
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Abstract
The lubricating oil composition for four-stroke cycle engine of the present invention includes a base oil (A) and from 0.5 to 10% by mass of a polyolefin (B) having at least an isobutene-derived constituting unit and having a number average molecular weight of 500 to 10,000, with a sulfated ash content being from 0.3 to 1.2% by mass.
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