Abstract: An antioxidant additive combination for lubricating oils is prepared by combining (a) a sulfur containing molybdenum compound prepared by reacting an acidic molybdenum compound, a basic nitrogen compound, and carbon disulfide, with (b) an organic sulfur compound.

Abstract: Antioxidant additives for lubricating oil are prepared by combining an acidic molybdenum compound, a basic nitrogen compound complex and a sulfur source to form a sulfur- and molybdenum-containing composition.

Abstract: Hydrocarbylethyl sulfonyl fluorides in which the hydrocarbyl substituent contains at least 3 carbon atoms, can be prepared by reacting 2-mercaptoethanol with chlorine to form chloroethyl sulfonyl chloride which is treated with aqueous potassium fluoride to yield chloroethyl sulfonyl fluoride, followed by treatment with magnesium oxide to yield vinyl sulfonyl fluoride. The vinyl sulfonyl fluoride is adducted to a hydrocarbyl substituent precursor, such as an olefin or halogenated olefin. A representative compound is polyisobutenyl sulfonyl fluoride. The hydrocarbylethyl sulfonamide products for which the hydrocarbylethyl sulfonyl fluorides are intermediates are useful as additives for lubricating oils.

Abstract: A lubricating oil of outstanding detergency contains an alkaline earth metal aliphatic sulfonate and an alkenyl monosuccinimide.

Abstract: A lubricating oil of outstanding detergency contains an alkaline earth metal aliphatic sulfonate and an ester of a monohydroxyalkyl hydrocarbyl thiophosphonate.

Abstract: A lubricating oil of outstanding detergency contains an alkaline earth metal aliphatic sulfonate and a Mannich base condensation product.

Abstract: A lubricating oil of outstanding detergency contains an alkaline earth metal aliphatic sulfonate and an ester of a hydrocarbon-substituted succinic acid.

Abstract: Oil-soluble, nitrogen-containing compositions, useful as lubricating oil additives, are provided. These compositions are prepared by reacting: (a) an aryl ester of a hydrocarbylethylsulfonic acid; or (b) a hydrocarbylsulfonyl chloride with a nitrogen-containing compound containing at least one amine hydrogen, i.e., --NH function. Also provided are processes for preparing these compositions and lubricating oil additive concentrates and lubricating oil compositions containing these compositions.

Abstract: Oil-soluble detergent-dispersant Group I and Group II metal or lead salts of substantially saturated hydrocarbyl-substituted ethylsulfonic acids, processes for preparing these salts, lubricating oil additive concentrates and lubricating oil compositions containing them are disclosed.

Abstract: Novel compositions are prepared from the thermal decomposition product of azidoformate esters reacting with aliphatic hydrocarbon olefins to form aziridine carbamates, which are then reacted with a polyamine free of primary amino groups and having at least one secondary amino group. These compositions find use as detergents and dispersants in lubricating oils and fuels, and also as emulsifiers.