A crude oil friction reducer is disclosed. The friction reducer includes water soluble anionic surfactants as active components and non-aromatic solvents. The water soluble anionic surfactants include anionic sulfonate surfactant and an anionic sulfate surfactant, such as anionic sodium sulfate surfactant, dissolved in an aqueous chelating solution. The friction reducer may also include a pH adjuster. The friction reducer is used with heavy and extra heavy crude oil.

A lubricating oil composition for two-wheeled motor vehicles including a base oil and a metal phenate and having a coefficient of friction measured of less than 0.0900. The lubricating oil composition in which a performance required for lubricating oil for engines is satisfied, and a good shift feeling is achieved while a high coefficient of friction is kept in a wet clutch.

A lubricating oil composition for two-wheeled motor vehicles including a base oil and a metal phenate and having a coefficient of friction measured of less than 0.0900. The lubricating oil composition in which a performance required for lubricating oil for engines is satisfied, and a good shift feeling is achieved while a high coefficient of friction is kept in a wet clutch.

A lubricating oil composition may have excellent fuel economy and high shear stability. Such a lubricating oil composition may include: a comb-like polymer (A1) having a weight average molecular weight (Mw) of less than 300,000; and a comb-like polymer (A2) having a Mw of at least 400,000. The (A1)/(A2) mass content ratio of the comb-like polymer (A1) to the comb-like polymer (A2) in terms of resin content may be at least 0.25.

Hydrogenated polymers with a radial structure having a core made up of calixarenes of the general formula (I), to the core of which is linked a number P of hydrogenated linear polymer segments selected from: hydrogenated homopolymers or copolymers of conjugated dienes; or hydrogenated copolymers of said conjugated dienes and monoalkenyl arenes, and mixtures thereof said formula (I) in which: R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are independently selected from hydrogen; a group containing carbon and hydrogen; a group also containing heteroatoms in addition to carbon and hydrogen; a group also containing silicon in addition to carbon, hydrogen and heteroatoms; one of the two substituents R.sub.5 and R.sub.6 is hydrogen, while the other may be hydrogen or alkyl, with a number of carbon atoms between 1 and 6, preferably methyl and ethyl; n is an integer in the range between 4 and 16.

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Polymeric compositions obtainable by free-radical polymerization of at least two different alkyl (meth)acrylates in the presence of at least one ethylene-vinyl ester copolymer, the alkyl (meth)acrylates used being a mixture comprising alkyl (meth)acrylates having linear C.sub.12- to C.sub.60-alkyl radicals and different alkyl (meth)acrylates having linear C.sub.1- to C.sub.11-alkyl radicals and/or branched C.sub.4- to C.sub.60-alkyl radicals and/or cyclic C.sub.5- to C.sub.20-alkyl radicals. The use of such polymeric compositions as pour point depressants for crude oils, mineral oils or mineral oil products.

The present invention relates to the use of specific esters in a functional fluid for electric vehicles.

The present invention relates to novel uses of corrosion inhibitors in fuels and lubricants.

An oil composition for power steering, includes: a) 75 to 85 weight percent (wt %) of a paraffinic base oil; b) 5 to 15 wt % of a dioctyl adipate plasticizer; c) 1 to 5 wt % of a polymethacrylate viscosity modifier; d) 0.01 to 1 wt % of an overbased calcium sulfonate detergent/dispersant; and e) 1 to 5 wt % of a load-carrying and wear resistant additive package.

An oil composition for power steering, includes: a) 75 to 85 weight percent (wt %) of a paraffinic base oil; b) 5 to 15 wt % of a dioctyl adipate plasticizer; c) 1 to 5 wt % of a polymethacrylate viscosity modifier; d) 0.01 to 1 wt % of an overbased calcium sulfonate detergent/dispersant; and e) 1 to 5 wt % of a load-carrying and wear resistant additive package.