Abstract: This invention is directed to ultra-low viscosity passenger car engine oil compositions with a kinematic viscosity at 100° C. of from 4 to 6 cSt, and comprising in admixture 60 wt % to 90 wt % of a first base oil component, based on the total weight of the composition, the first base oil component consisting of a polyalphaolefin base stock or combination of polyalphaolefin base stocks, each having a kinematic viscosity at 100° C. of from 3.2 cSt to 3.8 cSt; and 0.1 wt % to 20 wt % of a second base oil component, based on the total weight of the composition, the second base oil component consisting of a Group II, Group III or Group V base stock, or any combination thereof; wherein the composition comprises from 0 wt % to less than 0.25 wt % viscosity index improver, on a solid polymer basis.

Abstract: This invention is directed to lubricating compositions comprising a first base oil component consisting of a polyalphaolefin base stock or combination of polyalphaolefin base stocks, each having a kinematic viscosity at 100° C. of from 3.2 cSt to 3.8 cSt and obtained by a process comprising: (a) contacting a catalyst, an activator, and a monomer in a first reactor to obtain a first reactor effluent, the effluent comprising a dimer product, a trimer product, and optionally a higher oligomer product, (b) feeding at least a portion of the dimer product to a second reactor, (c) contacting said dimer product with a second catalyst, a second activator, and optionally a second monomer in the second reactor, (d) obtaining a second reactor effluent, the effluent comprising at least a trimer product, and (e) hydrogenating at least the trimer product of the second reactor effluent.

Abstract: This invention is directed to passenger car engine oil compositions comprising in admixture 60 wt % to 90 wt % of a first base oil component, based on the total weight of the composition, the first base oil component consisting of a polyalphaolefin base stock or combination of polyalphaolefin base stocks, each having a kinematic viscosity at 100° C. of from 3.2 cSt to 3.8 cSt; 0.1 wt % to 20 wt % of a second base oil component, based on the total weight of the composition, the second base oil component consisting of a Group II, Group III or Group V base stock, or any combination thereof; and at least 0.75 wt % viscosity index improver, on a solid polymer basis.

Abstract: This invention is directed to ultra-low viscosity passenger car engine oil compositions with a kinematic viscosity at 100° C. of from 4 to 6 cSt, and comprising in admixture 60 wt % to 90 wt % of a first base oil component, based on the total weight of the composition, the first base oil component consisting of a polyalphaolefin base stock or combination of polyalphaolefin base stocks, each having a kinematic viscosity at 100° C. of from 3.2 cSt to 3.8 cSt; and 0.1 wt % to 20 wt % of a second base oil component, based on the total weight of the composition, the second base oil component consisting of a Group II, Group III or Group V base stock, or any combination thereof; wherein the composition comprises from 0 wt % to less than 0.25 wt % viscosity index improver, on a solid polymer basis.

Abstract: This invention is directed to lubricating compositions comprising a first base oil component consisting of a polyalphaolefin base stock or combination of polyalphaolefin base stocks, each having a kinematic viscosity at 100° C. of from 3.2 cSt to 3.8 cSt and obtained by a process comprising: (a) contacting a catalyst, an activator, and a monomer in a first reactor to obtain a first reactor effluent, the effluent comprising a dimer product, a trimer product, and optionally a higher oligomer product, (b) feeding at least a portion of the dimer product to a second reactor, (c) contacting said dimer product with a second catalyst, a second activator, and optionally a second monomer in the second reactor, (d) obtaining a second reactor effluent, the effluent comprising at least a trimer product, and (e) hydrogenating at least the trimer product of the second reactor effluent.

Abstract: This invention is directed to passenger car engine oil compositions comprising in admixture 60 wt % to 90 wt % of a first base oil component, based on the total weight of the composition, the first base oil component consisting of a polyalphaolefin base stock or combination of polyalphaolefin base stocks, each having a kinematic viscosity at 100° C. of from 3.2 cSt to 3.8 cSt; 0.1 wt % to 20 wt % of a second base oil component, based on the total weight of the composition, the second base oil component consisting of a Group II, Group III or Group V base stock, or any combination thereof; and at least 0.75 wt % viscosity index improver, on a solid polymer basis.

Abstract: An engine oil lubricant composition comprising a major amount of base oil and an effective amount of a zinc dialkyl dithio phosphate, a polymeric viscosity index improver and a mixture of alkaline earth metal detergents provides improved fuel efficiency while providing excellent wear in an engine.

Abstract: An improved lubricating composition suitable for diesel engines comprising a major amount of at least one oil of lubricating viscosity and a minor amount of an alkylamine-alkylphosphate additive. The alkylamine-alkylphosphate additive comprises from at least 1.25 equivalents of alkylamine to 1.0 equivalents of alkylphosphate.

Abstract: A marine diesel engine system includes a diesel engine having a plurality of cylinders. The system also includes, proximate the engine, a primary engine lubricant and an additive selected from certain alkylamine-alkylphosphates, 500 TBN calcium sulfonate and mixtures thereof. A means for blending the lubricant and additives into a mixture for introduction into a cylinder is provided. Thus lubricant properties may be modified depending upon engine conditions.

Abstract: A device and a method for the modification of an operating all-loss engine lubricant's properties in response to actual engine operating conditions. The present invention is a method that comprises (1) monitoring the specific engine parameter(s) of interest, or in the alternative, predicting those parameter(s) from other engine inputs for a crosshead diesel engine; (2) calculating from said parameter(s) or input(s) the amount of performance enhancer(s), base lubricant or alternatively formulated lubricant that need be added to the engine's base lubricant; and (3) modifying said base lubricant with said performance enhancers, additional base lubricant or alternatively formulated lubricant before introduction the combination into said monitored part or location.

Abstract: A device and a method for real time optimizing engine lubricating oil properties in response to actual engine operating conditions. the present invention is a method that comprises measuring, directly or indirectly, a system parameter of interest near a location of interest, calculating from said parameter(s) or input(s) the amount of a secondary fluid selected from performance enhancer(s), additional base lubricant, alternatively formulated lubricant or diluent that need be added to the base lubricant; and supplementing said base lubricant with said secondary fluid before introducing the combination into said monitored location.

Abstract: This invention relates to lubricating oil compositions that have surprisingly been shown to reduce the formation of lacquer deposits in engines. More specifically, this invention relates to a lubricating oil for natural gas engines that reduces siloxane-related cylinder liner lacquer deposits.

Abstract: A method to employ instrumentation to effectuate variation in lubricant flow rate or properties in response to actual engine conditions. Preferably, the present invention provides a method for the in situ monitoring of the lubricating oil's effectiveness in a two-stroke diesel engine by measuring the used lubricant's Fe content and fuel sulfur content with XRF technology and the used lubricant's BN with an IR measurement device, and for efficiently modifying the lubricant's properties and/or flow rate to the equipment in response to the actual wear or corrosion needs of the machinery or engine.

Abstract: A marine diesel engine system includes a diesel engine having a plurality of cylinders. The system also includes, proximate the engine, a primary engine lubricant and an additive selected from certain alkylamine-alkylphosphates, 500 TBN calcium sulfonate and mixtures thereof. A means for blending the lubricant and additives into a mixture for introduction into a cylinder is provided. Thus lubricant properties may be modified depending upon engine conditions.

Abstract: A method to employ instrumentation to effectuate variation in lubricant flow rate or properties in response to actual engine conditions. Preferably, the present invention provides a method for the in situ monitoring of the lubricating oil's effectiveness in a two-stroke diesel engine by measuring the used lubricant's Fe content and fuel sulfur content with XRF technology and the used lubricant's BN with an IR measurement device, and for efficiently modifying the lubricant's properties and/or flow rate to the equipment in response to the actual wear or corrosion needs of the machinery or engine.

Abstract: A device and a method for real time optimizing engine lubricating oil properties in response to actual engine operating conditions. the present invention is a method that comprises measuring, directly or indirectly, a system parameter of interest near a location of interest, calculating from said parameter(s) or input(s) the amount of a secondary fluid selected from performance enhancer(s), additional base lubricant, alternatively formulated lubricant or diluent that need be added to the base lubricant; and supplementing said base lubricant with said secondary fluid before introducing the combination into said monitored location.

Abstract: The present invention relates to a method to directly measure a lubricating oil's Total Base Number (TBN) during engine operations using an infrared (“IR”) sensing device. The method measures either the actual TBN of the oil, or the TBN depletion of the oil. Either value may be determined without comparison to a reference oil. The method comprises determining the IR spectrum for the oil, pre-selecting a certain frequency range, finding the peak within that range, calculating the absorbance of the peak and determining the TBN or TBN depletion from that value.

Abstract: A device and a method for the modification of an operating all-loss engine lubricant's properties in response to actual engine operating conditions. The present invention is a method that comprises (1) monitoring the specific engine parameter(s) of interest, or in the alternative, predicting those parameter(s) from other engine inputs for a crosshead diesel engine; (2) calculating from said parameter(s) or input(s) the amount of performance enhancer(s), base lubricant or alternatively formulated lubricant that need be added to the engine's base lubricant; and (3) modifying said base lubricant with said performance enhancers, additional base lubricant or alternatively formulated lubricant before introduction the combination into said monitored part or location.