Abstract: An improved method of lubrication of a controlled-slip differential comprises using a lubricant comprising major amounts of a hydrocarbon base stock and friction improving amounts of synthetic sulfurized oil consisting essentially of a cosulfurized blend of a triglyceride and a C.sub.2 -C.sub.128 monoolefin. The hydrocarbon base stock can have a kinematic viscosity at 210.degree. F. in the range of 1.5 to 200.0 cs. and contain paraffinic (by VGC) petroleum oil or a blend of at least one C.sub.13 -C.sub.29 naphthene and from 0.1 to 20 parts by weight, based on said naphthene of at least one member from at least one of the following groups (a), (b), (c) and (d):(a) a synthetic liquid C.sub.3 -C.sub.

Abstract: A simplified procedure for making a water-in-oil emulsion involving passing the water and oil through an open face centrifugal pump, passing the pump effluent through a nozzle, and repeating these two steps until an emulsion is formed.

Abstract: A composition useful as a base stock for a lubricant in a traction drive transmission has a kinematic viscosity at 210.degree.F in the range of 1.5-200.0 cs. and containsA. from 1-25 parts by weight of a hydrogenated polymer of C.sub.3 -C.sub.8 aliphatic monoolefin, said polymer having an average molecular weight in the range of 180-2000, andB. one part by weight of at least one member selected fromI. at least one saturated adamantane compound, said adamantane compound containing no elements other than carbon, hydrogen, fluorine and oxygen, wherein said oxygen is combined in an ether or an ester linkage or is in a carboxylic acid, hydroxyl or carbonyl group;Ii. a paraffinic petroleum oil containing less than 1% by weight of aromatics and having an ultraviolet absorptivity at 260 millimicrons of less than 0.5; andIii. a mixture of members from (i) and (ii).