专利名称：Ashless lubricating oil composition with long
life
发明人：S. James Cartwright申请号：US10830771申请日：20040423
公开号：US20040248745A1公开日：20041209
摘要：An ashless natural gas engine lubricating composition which has enhancedresistance to oxidation, nitration and viscosity increase employs as additives in a
lubricating oil basestock a combination of phenolic and alkylthiocarbamoyl antioxidantsand an ashless phosphorous antiwear additive.
申请人：CARTWRIGHT S. JAMES
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