ULTRA-LOW SAPS LUBRICANTS FOR INTERNAL COMBUSTION ENGINES
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United States of America Patent
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Issued Date -
Jul 3, 2014
app pub date -
Dec 28, 2012
filing date -
Dec 28, 2012
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Abandoned
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Abstract
Disclosed is an ultra-low SAPS lubricating oil composition comprising:
- an oil of lubricating viscosity;an aromatic dicarboxylic acid treated dispersant supplying at least 0.30 wt % of the aromatic dicarboxylic acid to said lubricating oil composition;an ashless peroxide decomposer present at a treat rate of from about 0.4 to 5.0 wt %;a metal deactivator wherein the metal deactivator is present at a treat rate of greater than 0.08 wt %;wherein said lubricating oil composition contains less than 1000 ppm sulfur, less than 300 ppm phosphorus and less than 0.25 wt % sulfated ash.
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