Use of additives in a lubricant composition for automotive driving system

A lubricant composition having a 40°C dynamic viscosity of 40 mm 2 /s or less that has wear resistance equal to or better than a lubricant having a 40°C dynamic viscosity of 76 mm 2 /s is achieved by providing a base oil with a zinc dithiophosphate and alkaline earth metal salt in an amount to provi...

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Bibliographische Detailangaben
Hauptverfasser:	Yamamoto, Yoshikazu, Yoshimura, Narihiko, Ichikawa, Akihiko, Yamamori, Kazuo, Kato, Tomohiro, Saito, Koji, Yoneda, Tetsuzo
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CHEMISTRY FUELS INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATINGCOMPOSITIONS LUBRICANTS LUBRICATING COMPOSITIONS METALLURGY PEAT PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MONOXIDE USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATINGINGREDIENTS IN A LUBRICATING COMPOSITION
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Beschreibung
Zusammenfassung:	A lubricant composition having a 40°C dynamic viscosity of 40 mm 2 /s or less that has wear resistance equal to or better than a lubricant having a 40°C dynamic viscosity of 76 mm 2 /s is achieved by providing a base oil with a zinc dithiophosphate and alkaline earth metal salt in an amount to provide a ratio of elemental zinc to alkaline earth metal in the oil in the range of 0.2 to 1.0.