Low sulfated ash, low sulfur, low phosphorus, low zinc lubricating oil composition
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United States of America Patent
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Jan 29, 2013
Grant Date -
Mar 27, 2008
app pub date -
Sep 12, 2007
filing date -
Sep 26, 2006
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Abstract
A low sulfated ash, tow sulfur, low phosphorus, low zinc lubricating, oil composition preferably employable for internal combustion engines using a low sulfur hydrocarbon fuel comprises a base oil having a saturated component of 85 wt. % or more, a viscosity index of 110 or more, and a sulfur content of 0.01 wt. % or less; an alkaline earth metal-containing detergent; a nitrogen-containing ashless dispersant of a weight average molecular weight of 4,500 or more; a phenolic or amine oxidation inhibitor; and a basic nitrogen-containing compound-oxymolybdenum complex.
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