05102566 is referenced by 55 patents and cites 78 patents.

In accordance with the present invention, there are provided low sulfacted ash lubricating oil compositions which comprise an oil of lubricating viscosity as the major component and as the minor component (A) at least about 2 wt % of at least one ashless nitrogen- or ester-containing dispersant, (B) an antioxidant effective amount of at least one oil soluble antioxidant material, and (C) at least one oil soluble dihydrocarbyl dithiophosphate antiwear material wherein the hydrocarbyl groups contain an average of at least 3 carbon atoms, and wherein the lubricating oil is characterized by a total sulfated ash (SASH) level of from 0.01 to about 0.6 wt % and by a SASH wt:dispersant wt ratio of from about 0.01 to about 0.2:1.

Title
Low ash lubricant compositions for internal combustion engines (PT-727)
Application Number
7/332906
Publication Number
5102566
Application Date
April 3, 1989
Publication Date
April 7, 1992
Inventor
Alan A Schetelich
Scotch Plains
NJ, US
Glen P Fetterman Jr
Morris Plains
NJ, US
Agent
J B Murray Jr
Assignee
Exxon Chemical Patents
NJ, US
IPC
C10M 145/08
C10M 161/00
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