A lubricating and cooling fluid for an electric motor system including a lubricating base oil, at least one sulfurized component, a dispersant system comprising at least two dispersants, and a friction modifier system comprising at least two friction modifiers. The lubricating and cooling fluid provides good wear and friction performance as well as good copper corrosion and electrical conductivity for use in electric motor system.

The disclosed technology relates to a lubricant composition for automotive gears, axles and bearings, the lubricant composition containing an oil of lubricating viscosity and an oil-soluble titanium compound in place of boron compounds, as well as a method of obtaining thermal stability performance in automotive gears, axles and bearings without the boron content that is typical, by lubricating such automotive gears, axles and bearings with a lubricant composition containing an oil-soluble titanium compound and an amine-containing phosphorus rainwear agent.

A lubricating oil composition comprising a base oil, a zinc dialkyldithiophosphate, and a sarcosine derivate is described. The lubricating oil composition may comprise the zinc dialkyldithiophosphate at a concentration of 0.10 to 10 mass % and the sarcosine derivate at a concentration of 0.01 to 5.0 mass %. The lubricating oil composition may have a kinematic viscosity at 100° C. of 6.5 mm.sup.2/s or less, and can be used for lubricating a speed reducer.

The present invention provides a lubricating oil additive, including: a molybdenum compound (A) represented by the following general formula (1); and a sulfur-based composition (B) containing a sulfur-based compound (b-1) represented by the following general formula (2) and at least one kind of sulfur-based compound (b-2) represented by the following general formula (3) or (4), and a lubricating oil composition containing the additive. In the formula (1), R.sup.1 to R.sup.4 each represent alkyl groups having 6 to 18 carbon atoms, the groups being identical to or different from each other, and X.sup.1 to X.sup.4 each independently represent an oxygen atom or a sulfur atom. In the formula (2), R.sup.5 and R.sup.6 each represent alkyl groups having 3 to 24 carbon atoms, the groups being identical to or different from each other, and “a” and “b” each represent a number from 1 to 5. In the formulae (3) and (4), R.sup.7 to R.sup.10 each represent alkylene groups having 1 to 28 carbon atoms, the groups being identical to or different from each other, R.sup.11 and R.sup.12 each independently represent a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, and “c” and “d” each independently represent a number from 1 to 8, provided that at least one of R.sup.11 or R.sup.12 represents an alkyl group having 1 to 3 carbon atoms.

##STR00001##

A lubricant composition comprising an oil of lubricating viscosity and 0.01 to 5 percent by weight of a substantially sulfur-free alkyl phosphate amine salt, where at least 30 mole percent of the phosphorus atoms are in an alkyl pyrophosphate salt structure, exhibits good antiwear performance. In the phosphate amine salt, at least 80 mole percent of the alkyl groups are typically secondary alkyl groups of 3 to 12 carbon atoms.

A gear lubricant composition includes at least 97% by weight, based on the total weight of the lubricant composition, of at least one hydrocarbon-based oil that includes a weight content of isoparaffins ranging from 90 to 0%, a weight content of normal paraffins ranging from 0 to 10% and a carbon content of biological origin greater than or equal to 90% relative to the total weight of the oil, at least 0.01% by weight, based on the total weight of the lubricant composition, of at least one additive selected among the anti-wear additives, extreme pressure additives, anti-corrosion additives, additives having metal-deactivating properties, anti-foam additives, anti-oxidant additives selected among the phenolic anti-oxidants, and the mixtures thereof.

The present disclosure generally relates to a lubricating oil composition comprising: a major amount of an oil of lubricating viscosity, one or more detergents comprising at least one alkylhydroxybenzoate compound, and an ashless sulfur compound. Also provided is a method of lubricating an engine with said lubricating oil composition.

A lubricating and cooling fluid for an electric motor system including a lubricating base oil, at least one sulfurized component, a dispersant system comprising at least two dispersants, and a friction modifier system comprising at least two friction modifiers. The lubricating and cooling fluid provides good wear and friction performance as well as good copper corrosion and electrical conductivity for use in electric motor system.

The present disclosure relates to a durable lubricating fluid for an electric motor or hybrid-electric motor. The disclosed technology relates to a durable lubricating fluid comprising an oil of lubricating viscosity, a thiadiazole or derivative thereof, and an amine salt of a phosphoric acid.

The present invention concerns a coolant, present as an emulsion in the form of a concentrate, for machining fiber-reinforced plastics and material combinations containing fiber-reinforced plastics and metals; furthermore, the present invention also concerns a coolant, present as a solution in the form of concentrate, for machining fiber-reinforced plastics.