| abstract |
The present invention relates to a lubricating composition for an engine comprising at least one base oil, at least one viscosity index modifier polymer, at least one organomolybdenum compound, and at least one polyalkylene glycol, The polyalkylene glycol is obtained by polymerizing or copolymerizing an alkylene oxide containing 3 to 8 carbon atoms, and includes butylene oxide. The polyalkylene glycol is used in an amount of 1 to 28 mass%, based on the total mass of the lubricating composition, . When at least one polyalkylene glycol obtained by polymerizing or copolymerizing an alkylene oxide containing 3 to 8 carbon atoms and containing butylene oxide is used in a base oil, a hybrid engine and / or a microhybrid engine Thereby reducing the wear of the connecting rod bearing of the thermal internal combustion engine of the vehicle. |