A lubricating oil composition which may contain a zinc dialkyl dithiophosphate, and whose color deterioration over time is alleviated. Such a lubricating oil composition may contain: a base oil (A); a zinc dialkyl dithiophosphate (B); and a sodium-based detergent (C). In such a lubricating oil composition, a content of zinc atoms may be 100 ppm by mass to 2,000 ppm by mass based on a total amount of the lubricating oil composition, and a content of sodium atoms may be 5 ppm by mass to 1,000 ppm by mass based on the total amount of the lubricating oil composition.

In one or more embodiments, this application relates to tribotechnical additive and lubricant compositions based on self-assembled carbon nanoarchitectonics derived through nanoscale modifications of organosilane-functionalized nanocarbon with one or multiple combinations of organo-molybdenum, organo-boron, organo-sulfur, organo-phosphorus, and heterocyclic compounds. The novel lubricant is characterized by having a composition comprising (A) one or more types of the novel additive compositions, (B) Base oil//lubricant, and optionally (C) one or more additives selected from the group including antioxidants, dispersants, detergents, anti-wear additives, extreme pressure additives, friction modifiers, viscosity index modifiers, seal swell additives, defoamers, pour point depressants and corrosion/rust inhibitors. The selfassembled carbon nanoarchitectonics is expected to enhance the surface chemistry, antiwear, antifriction, antioxidancy, electrothermal, and corrosion inhibiting characteristics of the tribotechnical compositions for formulating high-quality solutions in a wide range of applications.

There is disclosed an antifoam component for a mechanical device which includes a fluorinated poly(acrylate) copolymer. The antifoam component has improved foam performance and thermal stability in finished fluids, such as driveline fluids.

A lithium complex hybrid grease is based on a lithium complex grease in combination with a PFPE grease. The lithium complex hybrid grease can be used at higher temperatures, does not form layers in the process, and exhibits a low hardening tendency. The lithium complex hybrid grease is usable in components in the automotive field and in the industrial field.

This ball screw grease composition for a rack-assisted electric power steering contains a thickener, a base oil, and at least one compound selected from the group consisting of a Ca sulfonates, fatty acids, and triglycerides, wherein the kinematic viscosity of the base oil at 40° C. is 4-100 mm2/s, and the worked penetration of the composition is 265-385.

An ionic liquid composed of nitrogen-free cations and aromatic halogen- and boron-free anions is useful as an additive to prolong the service life of hydrocarbonaceous liquids exposed to nitrogen dioxide contamination, and to provide friction and wear reduction.

A lubricating composition for a transmission or gearbox including a mixture of products providing phosphorus to the fluids effective to achieve good adhesive wear and abrasive wear.

The present invention relates to a lubricating composition containing: an oil of lubricating viscosity, a non-borated dispersant, a detergent, and an antiwear package comprising (a) a derivative of a hydroxycarboxylic acid, (b) an amine salt of a phosphoric acid ester, and (c) a phosphite having at least one hydrocarbyl group with 4 or more carbon atoms. The invention further provides for a method of lubricating a driveline device application by employing a lubricating composition containing the antiwear package.

Provided are lubricant compositions comprising a base oil, a polyoxypropylene polymer, and a butyleneoxy based polyoxyalkylene polymer. The base oil, polyoxypropylene polymer and polyoxyalkylene polymer are soluble with one another.

The invention relates to a grease composition having a base oil and a thickener that includes hydrophilic metal oxide particles and one or more amines that contain one or more unsaturated C—C bonds and/or at least one OH group. The hydrophilic metal oxide particles have a BET specific surface area of at least 10 m.sup.2/g and at least 80% of the hydrophilic metal oxide particles have a particle size in the range of from 5 nm to 900 μm. The amount of the thickener is in the range of from 0.1-40% by weight, based on the total weight of the grease composition. The invention further relates to methods for manufacturing the grease composition, and the use of the grease composition for lubricating bearings, gears and couplings.