| 摘要 |
PROBLEM TO BE SOLVED: To provide an additive concentrate containing a overbased metal detergent and a high level organic friction modifier, in which the components do not interact to form sediment. SOLUTION: The lubricating oil additive concentrate contains a lubricating viscous oil, a basic metal complex, a polyalkenyl acylating agent, and a surface active agent having at least one hydroxy or amino group, in which the basic metal complex is preblended with the polyalkenyl acylating agent prior to introduction to the concentrate. COPYRIGHT: (C)2006,JPO&NCIPI |
