Abstract: The present invention concerns the use of at least one polyorganosiloxane to release air from a lubricant composition comprising at least one base oil, when lubricating at least one moving part of an electric or hybrid vehicle.

Abstract: A lubricating composition includes at least one base oil, at least one borated dispersant, at least two antioxidants selected from amine antioxidants, phenolic antioxidants substituted with one or more linear or branched alkyl groups having from 1 to 30 carbon atoms, and mixtures thereof, and at least one phosphite polymer having the formula (I) wherein: - each of the R1, R2, R3 and R4 can be independently selected from the C1-C20 alkyl, C3-C22 alkenyl, C6-C40 cycloalkyl, C7-C40 cycloalkenyl, C1-20 methoxy alkyl glycol ethers and Y-OH groups; - Y is selected from C2-C40 alkylene, C2-C40 alkyl lactone, —R7— N(R8)—R9— groups, in which R7, R8 and R9 are independently selected from hydrogen, C1-C20 alkyl, C3-C22 alkenyl, C6-C40 cycloalkyl, C7-C40 cycloalkenyl, C1-20 methoxy alkyl glycol ethers; - m is an integer from 2 to 100; - n is an integer from 1 to 1000.

Abstract: A lubricating composition includes at least one base oil, at least one dispersant and at least one phosphite polymer having formula (I) wherein each of the R1, R2, R3 and R4 can be independently selected from the C1-C20 alkyl, C3-C22 alkenyl, C6-C40 cycloalkyl, C7-C40 cycloalkenyl, C1-20 methoxy alkyl glycol ethers and Y—OH groups; Y is selected from among the C2-C40 alkylene, C2-C40 alkyl lactone —R7—N(R8)—R9— groups, R7, R8 and R9 are independently selected from among hydrogen, C1-C20 alkyl, C3-C22 alkenyl, C6-C40 cycloalkyl, C7-C40 cycloalkenyl, C1-20 methoxy alkyl glycol ethers; m is an integer from 2 to 100; and n is an integer from 1 to 1000.

Abstract: A lubricating composition contains at least one base oil and at least one phosphite polymer having the formula (I) wherein each of R1, R2, R3 and R4 can be independently selected from the C1-C20 alkyl, C3-C22 alkenyl, C6-C40 cycloalkyl, C7-C40 cycloalkenyl, C1-20 methoxy alkyl glycol ethers and Y—OH groups; Y is selected from among the C2-C40 alkylene, C2-C40 alkyl lactone groups; —R7—(N(R8)—R9—, wherein R7, R8 and R9 are independently selected from among hydrogen, C1-C20 alkyl, C3-C22 alkenyl, C6-C40 cycloalkyl, C7-C40 cycloalkenyl, C1-20 methoxy alkyl glycol ethers; m is an integer from 2 to 100; and n is an integer from 1 to 1000.

Abstract: The present invention relates to the use of a lubricating composition comprising: —at least one base oil; and—at least one monoester which is separate from the base oil and formed between a linear, saturated or unsaturated C8-C14 monocarboxylic acid, and a branched, saturated or unsaturated C4-C16 monoalcohol to reduce the fuel consumption of a vehicle fitted with a transmission member, in particular a gearbox and/or an axle, which is lubricated by means of said composition.

Abstract: The present invention relates to a lubricating composition comprising at least one base oil and at least one additive chosen from anti-wear additives, extreme pressure additives, antioxidants, anti-corrosion additives, metal deactivator additives, anti-foam agents, dispersants and mixtures thereof, said composition having a boron concentration less than or equal to 100 ppm by weight and a nitrogen concentration strictly greater than 100 ppm by weight and less than or equal to 500 ppm by weight, with respect to the total weight of the lubricating composition.

Abstract: The present invention relates to the use of a lubricating composition comprising: -at least one base oil; and -at least one monoester which is separate from the base oil and formed between a linear, saturated or unsaturated C8-C14 monocarboxylic acid, and a branched, saturated or unsaturated C4-C16 monoalcohol to reduce the fuel consumption of a vehicle fitted with a transmission member, in particular a gearbox and/or an axle, which is lubricated by means of said composition.

Abstract: In the field of lubricating compositions, notably lubricant compositions for automobile vehicles, in particular to the field of lubricant compositions for transmissions, for gear boxes or for bridges, there is disclosed a lubricating composition including at least 30% by weight of the composition of at least one monoester, at least one polyalphaolefin oil (PAO) for which the kinematic viscosity measured at 100° C. ranges from 40 to 3,000 mm2·s?1 and at least one polyalphaolefin oil (PAO) for which the kinematic viscosity measured at 100° C. ranges from 1.5 to 10 mm2·s?1. Also disclosed is the use of this lubricating composition for reducing the fuel consumption of a vehicle equipped with a transmission, notably with a bridge or a gear box, lubricated by this lubricating composition.

Abstract: The present disclosure relates to a lubricating composition including at least one base oil, at least one compound including a dithiocarbamate group, at least one compound including a phosphite group, at least one compound including a dithiophosphate group and at least one compound including a thiadiazole group. The lubricating composition simultaneously exhibits good anti-wear properties, extreme-pressure, a low friction coefficient and good anti-seizing properties. The lubricating composition can be used for lubricating transmissions such as gearboxes, axles, preferably manual gearboxes of motor vehicles.

Abstract: A lubricating composition includes at least one base oil, at least one compound including a dithiocarbamate group, at least one compound including a phosphite group and at least one compound including a dithiophosphate group. The lubricating composition simultaneously has good anti-wear and extreme-pressure properties, a low coefficient of friction and good anti-seizing properties. The lubricating composition can be used for lubricating transmissions such as gearboxes, axles, preferably the manual gearboxes of motor vehicles.