Abstract: The present invention relates to methods of using a low sulfur, low phosphorus, low-ash, zinc free consumable lubricating composition in an internal combustion engine equipped with a pilot ignition system, where the composition comprises: an oil of lubricating viscosity; a high TBN succinimide dispersant and where the lubricant composition overall has a sulfated ash value of up to about 0.2, a phosphorus content of up to about 50 to about 800 ppm and a sulfur content of up to about 0.4 percent by weight.

Abstract: A lubricant composition of a synthetic oil of lubricating viscosity, 3 to 6 percent by weight of a nitrogen-containing dispersant, 1 to 2.5 weight percent of an overbased magnesium detergent, 1 to 5 weight percent of an antioxidant; and 0.25 to 1.5 weight percent of a friction modifier is useful for lubricating a hydrogen-fueled engine. The composition will typically contain less than 0.01 weight percent Ca, less than 0.01 weight percent Zn, less than 0.06 weight percent P, and will have a sulfated ash level of less than 1.2%.

Abstract: The present invention relates to methods of using a low sulfur, low phosphorus, low-ash, zinc free consumable lubricating composition in an internal combustion engine equipped with a pilot ignition system, where the composition comprises: an oil of lubricating viscosity; a high TBN succinimide dispersant and where the lubricant composition overall has a sulfated ash value of up to about 0.2, a phosphorus content of up to about 50 to about 800 ppm and a sulfur content of up to about 0.4 percent by weight.

Abstract: An internal combustion engine with a catalyst-containing exhaust-gas aftertreatment device is lubricated with a composition of a base oil; and a zinc salt of a mixture of phosphorus-containing compounds having hydrocarbyl groups R1 and R2 where the average total number of carbon atoms in R1 plus R2 for the mixture of phosphorus-containing compounds is at least 9.5, where 4 to 30 weight percent of such groups contain 2 to 4 carbon atoms and where in less than 8 mole percent of the phosphorus-containing molecules in the mixture of phosphorus-containing compounds each of R1 and R2 contain 2 to 4 carbon atoms.

Abstract: Lubricant compositions comprising (a) an oil of lubricating viscosity; and (b) at least one non-metal-containing additive, comprising a nitrogen-containing dispersant having a total base number of at least about 90 are useful for lubricating an internal combustion engine. The lubricants have less than 1.0% sulfated ash and a total base number of at least about 8.5, and at least 30% of the total base number of the composition is provided by non-metal-containing additives. The lubricants exhibit a high TBN without deterioration of elastomeric seals.

Abstract: A lubricant composition of a synthetic oil of lubricating viscosity, 3 to 6 percent by weight of a nitrogen-containing dispersant, 1 to 2.5 weight percent of an overbased magnesium detergent, 1 to 5 weight percent of an antioxidant; and 0.25 to 1.5 weight percent of a friction modifier is useful for lubricating a hydrogen-fueled engine. The composition will typically contain less than 0.01 weight percent Ca, less than 0.01 weight percent Zn, less than 0.06 weight percent P, and will have a sulfated ash level of less than 1.2%.

Abstract: Methods for regenerating or improving the regeneration of a particulate filter and for improving the performance of a particulate filter during the operation of an internal combustion engine comprise lubricating the engine with a lubricant composition comprising additives that when combusted can form an ash deposit in the filter. The methods are particularly useful for diesel particulate filters on diesel engines that are equipped with an exhaust gas recirculation system.

Abstract: The present invention relates to a low sulfur, low phosphorus, low-ash, zinc free consumable lubricant composition suitable for use in an internal combustion engine, comprising: an oil of lubricating viscosity containing less than 0.01 percent by weight of sulfur; a high TBN succinimide dispersant and overall all lubricant composition that has a sulfated ash value of up to about 0.2, a phosphorus content of up to about 50 to about 800 ppm and a sulfur content of up to about 0.4 percent by weight.

Abstract: The invention relates to the use of an emulsified fuel in combination with an engine oil that shows a synergistic effect in reducing emissions such as particulate matter, hydrocarbons and/or nitrogen oxides (NO, NO2, N2O, collectively NOx) and/or reducing wear from an engine.

Abstract: The present invention relates to a control release gel for delivery of additives free of producing ash to substantially free of producing ash into a lubricant. Further, the invention provides for a method of controlled release of additive(s) into the lubricant.

Abstract: An internal combustion engine with a catalyst-containing exhaust-gas aftertreatment device is lubricated with a composition of a base oil; and a zinc salt of a mixture of phosphorus-containing compounds having hydrocarbyl groups R1 and R2 where the average total number of carbon atoms in R1 plus R2 for the mixture of phosphorus-containing compounds is at least 9.5, where 4 to 30 weight percent of such groups contain 2 to 4 carbon atoms and where in less than 8 mole percent of the phosphorus-containing molecules in the mixture of phosphorus-containing compounds each of R1 and R2 contain 2 to 4 carbon atoms.

Abstract: Lubricant compositions comprising (a) an oil of lubricating viscosity; and (b) at least one non-metal-containing additive, comprising a nitrogen-containing dispersant having a total base number of at least about 90 are useful for lubricating an internal combustion engine. The lubricants have less than 1.0% sulfated ash and a total base number of at least about 8.5, and at least 30% of the total base number of the composition is provided by non-metal-containing additives. The lubricants exhibit a high TBN without deterioration of elastomeric seals.

Abstract: A lubricated part composition containing (a) a part with at least a partial hard surface coating of average thickness less than about 25 micrometres, said coating containing at least one moiety selected from the group consisting of silicides, nitrides, carbides, borides, oxides, sulphides and mixtures thereof; (b) a detergent selected from at least one of the group consisting of a phenate salt, a sulphonate salt, a salixarate salt and mixtures thereof; and (c) an oil of lubricating viscosity. The invention further relates to the use of the composition to decrease engine wear, decrease sludge formation, filter plugging, decrease sulphur emissions and decrease phosphorus emissions.

Abstract: The present invention relates to a low sulfur, low phosphorus, low-ash, zinc free consumable lubricant composition suitable for use in an internal combustion engine, comprising: an oil of lubricating viscosity containing less than 0.01 percent by weight of sulfur; a high TBN succinimide dispersant and overall all lubricant composition that has a sulfated ash value of up to about 0.2, a phosphorus content of up to about 50 to about 800 ppm and a sulfur content of up to about 0.4 percent by weight.

Abstract: Methods for regenerating or improving the regeneration of a particulate filter and for improving the performance of a particulate filter during the operation of an internal combustion engine comprise lubricating the engine with a lubricant composition comprising additives that when combusted can form an ash deposit in the filter. The methods are particularly useful for diesel particulate filters on diesel engines that are equipped with an exhaust gas recirculation system.

Abstract: The invention relates to the use of an emulsified fuel in combination with an engine oil that shows a synergistic effect in reducing emissions such as particulate matter, hydrocarbons and/or nitrogen oxides (NO, NO2, N2O, collectively NOx) and/or reducing wear from an engine.

Abstract: A lubricant in the form of an oil-insoluble solvent e.g. water in oil emulsion is described where a water soluble or water dispersible base is present in the dispersed phase. These lubricants are beneficial in various applications such as internal combustion engines where the oil desirable has enough basicity to neutralize any inorganic acids generated by sulfur present in the fuel.

Abstract: This invention relates to a lubricating oil composition, comprising: (A) a base oil; and a phosphorus-containing compound represented by the formulae wherein in Formulae (B-I) and (B-II), R1, R2 and R3 are independently hydrogen or hydrocarbyl groups, and a, b and c are independently zero or 1; the lubricating oil composition being characterized by a sulfur content of about 0.01 to about 0.25% by weight.

Abstract: A sump-lubricated internal combustion engine equipped with exhaust gas recycle, lubricated with (a) an oil of lubricating viscosity, (b) 0.05 to 1 percent by weight of an amide of an aliphatic carboxylic acid, and (c) at least one additional dispersant, detergent, or anti-wear agent, exhibits reduced temperature of the lubricant in the sump.

Abstract: A sump-lubricated internal combustion engine equipped with exhaust gas recycle, lubricated with (a) an oil of lubricating viscosity, (b) 0.05 to 1 percent by weight of an amide of an aliphatic carboxylic acid, and (c) at least one additional dispersant, detergent, or anti-wear agent, exhibits reduced temperature of the lubricant in the sump.