| 摘要 |
PCT No. PCT/EP95/02696 Sec. 371 Date Dec. 13, 1996 Sec. 102(e) Date Dec. 13, 1996 PCT Filed Jul. 7, 1995 PCT Pub. No. WO96/01885 PCT Pub. Date Jan. 25, 1996Multigrade lubricating oils which have acceptable performance in the VWInTD and Sequence VE engine tests and which are based on an ashless dispersant comprising an oil-soluble polymeric backbone having functional groups in which the hydrocarbon backbone is derived from an ethylene alpha-olefin (EAO) copolymers or alpha-olefin homo- or copolymer having greater than 30% of terminal vinylidene unsaturation achieve this performance by use of a detergent combination which includes a phenate in the formulation of the oils. |
