摘要 |
<p>This invention is directed to passenger car engine oil compositions comprising in admixture 60 wt % to 90 wt % of a first base oil component, based on the total weight of the composition, the first base oil component consisting of a polyalphaolefin base stock or combination of polyalphaolefin base stocks, each having a kinematic viscosity at 100° C. of from 3.2 cSt to 3.8 cSt; 0.1 wt % to 20 wt % of a second base oil component, based on the total weight of the composition, the second base oil component consisting of a Group II, Group III or Group V base stock, or any combination thereof; and at least 0.75 wt % viscosity index improver, on a solid polymer basis.</p> |
申请人 |
EXXONMOBIL RESEARCH AND ENGINEERING COMPANY;EXXONMOBIL CHEMICAL PATENTS INC. |
发明人 |
MARTIN, RICHARD, W.;DECKMAN, DOUGLAS, E.;KELLY, KEVIN, J.;EMETT, CRAIG, J.;HAGEMEISTER, MARK, P.;HARRINGTON, BRUCE, A.;LIN, COHN-YIE;MATSUNAGA, PHILLIP, T.;RUFF, CHARLES, J.;STAVENS, KEVIN, B. |