| 摘要 |
The present invention provides a lubricating composition comprising: an oil of lubricating viscosity; 3 wt % to 30 wt % of an alkaline earth or alkali metal sulphonate detergent; and an oil-soluble polyalkylene glycol having a distribution of molecular weight such that the molecules thereof have a weight of 2500 to less than 10,000 Daltons and comprise 0.05 wt % to 3 wt % of the lubricating composition. The invention further provides a method of lubricating a 2-stroke internal combustion engine cylinder liner (and piston) with the lubricating composition. |
