Lubricant oil composition for diesel engines (LAW913)
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United States of America Patent
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Mar 27, 2001
Grant Date -
N/A
app pub date -
Dec 10, 1999
filing date -
Dec 21, 1998
priority date (Note) -
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Abstract
The present invention relates to a lubricant oil composition, comprising a base oil composed of a mineral and/or synthetic oil incorporated with at least two types of additives (A) and (B) described below, characterized by being used for diesel engines operating with large quantities of soot in their oil, in particular those equipped with an exhaust gas recirculation (EGR) system: (A) sulfurized oxymolybdenum dithiocarbamate at 0.03 to 0.50 wt % as Mo, based on the whole composition, and (B) zinc dialkyl dithiophosphate at 0.04 to 0.50 wt % as P, also based on the whole composition.
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