A lubricant composition of an oil of lubricating viscosity and a phosphite ester reaction product of a monomeric phosphorous acid or an ester thereof with a first alkylene diol having two hydroxy groups in a 1,4 or 1,5 or 1,6 relationship and a second, alkyl-substituted, diol being a substituted 1,3-propylene diol, exhibits good wear and frictional performance.

Lubricant compositions comprising a base oil, one or more antioxidants selected from a group consisting of N--naphthyl-N-phenylamine antioxidants and diphenylamine antioxidants; and a sulfur-containing additive comprising up to seven carbon atoms exhibit outstanding oxidative stability and non-corrosion properties. The N--naphthyl-N-phenylamine antioxidants plus diphenylamine antioxidants in total may be present from about 0.2 wt % to about 0.8 wt %, based on the total weight of the lubricant composition. The sulfur provided by the sulfur-containing additive may be present from about 50 ppm to about 1000 ppm by weight, based on the total weight of the lubricant composition.

Traction fluid additive combination that is usable with any traction fluids base stock is provided. To optimize the traction, low temperature viscosity and shear stability performance, a combination of a polyisobutene and a polymethacrylate may be added to a base oil to obtain a traction fluid with good low temperature viscosity without degrading the shear strength properties of the fluid. To minimize foaming of the traction fluid, a combination of one, two, or more anti-foaming agents may be added to the fluid in addition to a standard additive package.

The invention is directed to a zinc-free lubricating composition for an internal combustion engine containing a phosphorus anti-wear agent, an ashless antioxidant, and an oxyalkylated phenol compound. The lubricating composition provides wear protection, deposit control, and improved acid control with reduced levels of metal-containing additives.

An alkyloxirane derivative represented by formula (1), wherein M.sub.H and M.sub.L calculated from a gel permeation chromatogram satisfy formula (2):

Z[O-(AO)n-H]x(1)

where Z represents a residual group of a compound having 1 to 22 carbon atoms and one to six hydroxyl groups and wherein all of the hydroxyl groups are excluded from said compound; x is 1 to 6; and AO represents an oxyalkylene group having 3 carbon atoms; and n is 25 or more;

0.35M.sub.L/M.sub.H0.75(2)

where M.sub.H represents a distance between point O and intersecting point P, and M.sub.L represents a distance between point Q and intersecting point P determined from the chromatogram.

The invention relates to industrial gear oil compositions that have been specially designed to have improved storage stability and/or paint compatibility and/or seal compatibility. This improvement is achieved while maintaining good performance in other areas. These improvements are particularly relevant to synthetic lubricants, such as those made with polyalphaolefin (PAO) base oils. This balance of properties has been difficult to achieve in synthetic compositions where problems in the areas of storage stability, paint compatibility and/or seal compatibility of become more pronounced. The invention also relates to processes of making such compositions and methods of using the same.

A base oil includes an ester compound obtained by reacting a fatty acid component and a monohydric alcohol component. The fatty acid component includes a C.sub.4-C.sub.28 fatty acid. The monohydric alcohol component includes at least one C.sub.4-C.sub.22 straight chain monohydric alcohol and at least one C.sub.4-C.sub.22 branched chain monohydric alcohol. A lubricant oil composition including the base oil is also disclosed.

The present invention generally relates to lubricating oil compositions useful for automatic transmissions, and particularly transmission oils for automotive automatic transmissions and/or continuously variable transmissions using wet clutch systems, in particular wet paper clutch containing a small amount of cellulose fiber and/or aramid fiber.

This disclosure relates to transfer plate lubricant compositions and methods of transporting open containers across stationary transfer plates.

It is an object of this invention to provide a lubricant additive applicable integrally to all of different types of lubricants for various applications. A lubricant additive adapted to be blended to a lubricating oil, which is characterized by comprising a synthesized base oil of the polyolester type, the content of which to be contained in the lubricant additive is in a range of from 30.0 w/w % to 60.0 w/w %, calcium sulfonate containing calcium carbonate formed in the calcite crystal structure, the content of which to be contained in the lubricant additive is in a range of from 5.0 w/w % to 30.0 w/w %, a poly-alpha-olefin oligomer, an anti-oxidant of the zinc dithiophosphate type, succinimide, an extreme pressure agent of the thiadiazole type and an anti-oxidant of the phenol type, is provided.