LONG-LIFE GASOLINE ENGINE OIL COMPOSITION
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United States of America Patent
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Issued Date -
Mar 24, 2011
app pub date -
Apr 1, 2010
filing date -
Sep 21, 2009
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Abstract
The present invention provides a long-life gasoline engine oil composition, which contains a hydrogenated styrene-diene compound, zinc alkyldithiophosphate, monoalkyl molybdenum dithiocarbamate, polyol ester, a hindered phenol antioxidant, and a base oil. With this composition, vehicle fuel efficiency can be improved, oxidation stability can be increased, and the life span of engine oil can be extended.
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