MANUAL TRANSMISSION LUBRICANTS WITH IMPROVED SYNCHROMESH PERFORMANCE

A lubricant comprising (a) an oil of lubricating viscosity; and (b) an overbased, carbonated calcium arylsulfonate detergent having a total base number (TBN) of at least about 640 as calculated on an oil-free basis effectively lubricates non-metallic surfaces in the synchronizer of a manual transmis...

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Bibliographische Detailangaben
Hauptverfasser:	BROWN, GARETH, HUSTON, MICHAEL E, WALKER, GARY M, SEDDON J., ELISA, FRIEND, CHRISTOPHER L
Format:	Patent
Sprache:	eng ; fre
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 comprising (a) an oil of lubricating viscosity; and (b) an overbased, carbonated calcium arylsulfonate detergent having a total base number (TBN) of at least about 640 as calculated on an oil-free basis effectively lubricates non-metallic surfaces in the synchronizer of a manual transmission. L'invention porte sur un lubrifiant comprenant (a) une huile de viscosité lubrifiante ; et (b) un détergent arylsulfonate de calcium carbonaté surbasique ayant un indice de base (BN), calculé sur une base exempte d'huile, d'au moins environ 640, lequel lubrifie efficacement des surfaces non métalliques dans le synchroniseur d'une boîte de vitesses manuelle.