Abstract: A continuous process for the preparation of high dropping point i.e. above 400.degree. F. lithium complex soap thickened grease composition comprising the steps of continuously saponifying a hydroxy C.sub.2 -C.sub.24 monocarboxylic acid and a C.sub.2 to C.sub.12 dicarboxylic acid with a lithium base in a lubricating oil substrate and then continuously dehydrating the mixture.

Abstract: A continuous process for manufacture of soap thickened grease compositions where a saponifiable material and a metal base are continuously introduced at an elevated temperature into a saponification zone maintained at superatmospheric pressure and saponified under turbulent conditions, wherein the saponified product is mixed with an aqueous solution of oil-insoluble additive materials at a superatmospheric pressure sufficient for maintaining all water in the liquid phase, wherein the saponified material-additive mixture is heated to an elevated temperature of at least 350.degree. F.

Abstract: A process for manufacturing high dropping point aluminum complex soap thickened greases having selected consistency, water resistance, rheopectic properties, and antiwear properties.

Abstract: A grease compound of a base oil, a thickener, and minor synergistic amounts of the extreme pressure agent combination of zinc dialkyldithiophosphate, the reaction product of butyl acid phosphate and dodecyl aniline, and Bis(.beta.-chlorophenethyl) disulfide.

Abstract: A grease may be made having synergistic extreme pressure properties using a major amount of a base oil and a thickener and a minor amount of low density polyethylene and known extreme pressure enhancing additives.