Lubricating oils having improved friction stability

Lubricating oil compositions having excellent friction stability comprise a base lubricating oil, an oil soluble source of phosphorus and a defined polyalkylene polyamine-based friction modifier that has been reacted with an acylating agent to convert at least one secondary amine group into an amide...

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Hauptverfasser: COGEN, KERRY LYNN, GORDA, KEITH R, NOLES JR., JOE R, WATTS, RAYMOND F
Format: Patent
Sprache:eng ; fre ; ger
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Zusammenfassung:Lubricating oil compositions having excellent friction stability comprise a base lubricating oil, an oil soluble source of phosphorus and a defined polyalkylene polyamine-based friction modifier that has been reacted with an acylating agent to convert at least one secondary amine group into an amide.