Abstract: The present invention relates to a fuel additive composition comprising at least a first additive chosen from quaternary ammonium salts different from betaines, and at least a second additive chosen from amido alkyl betaines, wherein the weight ratio of the amount of the first additive to the amount of the second additive is within the range of from 1:4 to 4:1. The invention also relates to an additive concentrate and to a fuel composition comprising this additive composition, and also to the use thereof for preventing and/or eliminating the deposits in at least one of the internal parts of an engine.

Abstract: The present invention relates to a fuel additive composition comprising at least a first additive chosen from quaternary ammonium salts different from betaines, and at least a second additive chosen from amido alkyl betaines, wherein the weight ratio of the amount of the first additive to the amount of the second additive is within the range of from 1:4 to 4:1. The invention also relates to an additive concentrate and to a fuel composition comprising this additive composition, and also to the use thereof for preventing and/or eliminating the deposits in at least one of the internal parts of an engine.

Abstract: The present invention relates to a fuel composition comprising a liquid fuel and a compound of dimer amide quaternary ammonium type. The invention also relates to the use of the compound of dimer amide quaternary ammonium type as a detergent additive in a liquid fuel for internal combustion engine.

Abstract: The present invention relates to a fuel composition comprising a liquid fuel and a compound of dimer amide quaternary ammonium type. The invention also relates to the use of the compound of dimer amide quaternary ammonium type as a detergent Q additive in a liquid fuel for internal combustion engine.

Abstract: A low viscosity oil has more than 50% by weight of 9-methylnonadecane. A lubricating composition has this low viscosity oil as base oil and, optionally, another base oil or an additive. The low viscosity oil has a kinematic viscosity at 100° C., measured by the ASTM D445 standard, of 0.5 to 2.5 mm2s?1. The low viscosity oil can be prepared using a metallocene catalyst, and the low viscosity oil can be used as high performance lubricant for lubrication in the field of motors, hydraulic fluids and gears, in particular bridges and transmissions.

Abstract: Disclosed are lubricating compositions and base oils for motor vehicles, specifically for engines, gearboxes, or vehicle axle assemblies. The lubricating composition contains an oil-soluble polymer that is a specific polyalkyl glycol or a specific polyalkylene glycol (PAG). Also described is use of the lubricating composition for reducing fuel consumption in a vehicle provided with an engine, an axle assembly, or a gearbox that are lubricated using the lubricating composition or the specific PAG.

Abstract: The invention refers to lubricant compositions comprising a specific diester together with a viscosity index improver.

Abstract: The invention refers to use of lubricant compositions comprising a specific diester and additives to reduce the fuel consumption of an engine.

Abstract: A low viscosity oil has more than 50% by weight of 9-methylnonadecane. A lubricating composition has this low viscosity oil as base oil and, optionally, another base oil or an additive. The low viscosity oil has a kinematic viscosity at 100° C., measured by the ASTM D445 standard, of 0.5 to 2.5 mm2 s?1. The low viscosity oil can be prepared using a metallocene catalyst, and the low viscosity oil can be used as high performance lubricant for lubrication in the field of motors, hydraulic fluids and gears, in particular bridges and transmissions.

Abstract: A low viscosity oil has more than 50% by weight of 9-methyl-11,13-dioctyltricosane. A lubricating composition having this low viscosity oil as base oil and, optionally, another base oil or an additive. The low viscosity oil has a kinematic viscosity at 100° C., measured by the ASTM D445 standard, of 4 to 8 mm2·s?1. The low viscosity oil can be prepared using a metallocene catalyst, and the low viscosity oil as high performance lubricant can be used for lubrication in the field of motors, hydraulic fluids and gears, in particular bridges and transmissions.

Abstract: Disclosed is a method for preparing a low-viscosity oil including more than 50 wt % of 9-methyl-11-octyl-heneicosane. The method uses a specific metallocene catalyst and makes it possible to prepare a polyalphaolefin oil (PAO) in which the kinematic viscosity at 100° C., measured according to standard ASTM D445, ranges from 3 to 4 mm2/s?1.

Abstract: Disclosed are lubricating compositions and base oils for motor vehicles, specifically for engines, gearboxes, or vehicle axle assemblies. The lubricating composition contains an oil-soluble polymer that is a specific polyalkyl glycol or a specific polyalkylene glycol (PAG). Also described is use of the lubricating composition for reducing fuel consumption in a vehicle provided with an engine, an axle assembly, or a gearbox that are lubricated using the lubricating composition or the specific PAG.

Abstract: Disclosed is a low-viscosity oil including more than 50 wt % of 9-methyl-11-octyl-heneicosane as well as a lubricating composition including the base oil and optionally another base oil or an additive. The oil has a kinematic viscosity at 100° C., measured according to standard ASTM D445, ranging from 3 to 4 mm2/s?1. Also disclosed is such a low-viscosity oil prepared according to a specific method using a metallocene catalyst as well as the use of the oil as a high-performance lubricant for lubrication in the fields of engines, gears, brakes, hydraulic fluids, coolants and greases.