New ashless TBN molecules are synthesized, and lubricant compositions containing them, boost the total base number. The lubricant compositions further tested for ASTM D6594 copper corrosion test meets ASTM limits.

The present invention relates to an engine oil containing, as a bearing particle, 0.1 g to 2 g of spherical graphite particles having an average diameter of 1 nm to 300 nm per liter, and an additive composition therefor.

The present disclosure relates to methods for improving phosphorus retention and improving antiwear performance in an internal combustion engine of a hybrid vehicle, comprising lubricating the internal combustion engine of the hybrid vehicle with a lubricating oil composition comprising: greater than 50 wt. % of a base oil of lubricating viscosity; and an amount of one or more zinc dialkyl dithiophosphate compound(s) sufficient to provide: from about 100 ppmw phosphorus to about 1000 ppmw phosphorus, based on a total weight of the lubricating oil composition; and from about 10 ppmw zinc to about 1200 ppmw zinc, based on the total weight of the lubricating oil composition.

The present invention relates to an engine oil containing, as a bearing particle, 0.1 g to 2 g of spherical graphite particles having an average diameter of 1 nm to 300 nm per liter, and an additive composition therefor.

A compound of formula (I):

##STR00001## wherein W is independently selected from the group consisting of H, F, Cl, Br, and I; X is independently selected from the group consisting of H, F, Cl, Br, and I; Y is independently selected from the group consisting of F, Cl, Br, and I; Z is independently selected from the group consisting of H, F, Cl, Br, and I; n is an integer from 1 to 8; and n′ is an integer from 1 to 12.

The invention relates to a method for producing lubricating compositions, oily corrosion-inhibiting industrial degreasers for oils and fuels, which are not degradable in the presence of oxygen, water, high temperatures and via contamination with particles, based on distilled and double-distilled fatty acids, a ternary compound, halogenated compounds, organic polymers, alcohols and mineral oil.

New ashless TBN molecules are synthesized, and lubricant compositions containing them, boost the total base number. The lubricant compositions further tested for ASTM D6594 copper corrosion test meets ASTM limits.

New ashless TBN molecules are synthesized, and lubricant compositions containing them, boost the total base number. The lubricant compositions further tested for ASTM D6594 copper corrosion test meets ASTM limits.

Provided is a grease composition which is excellent in fire extinguishing performance without water and can suppress fuming, malodor, and liquefaction on burning and a method for producing the grease composition. A grease composition contains a base oil (A), a thickener (B), and a fire retardant (C), wherein the base oil (A) contains a base oil (A1) having a 40° C. kinematic viscosity of 300 mm.sup.2/s or more, a sulfur content of 20 ppm by mass or less, and an initial boiling point of 400° C. or higher, the fire retardant (C) is at least one of aluminum hydroxide (C1) and 1,3,5-triazine-1,3,5 (2H, 4H, 6H)-tris(ethanol) (C2), and a content of the fire retardant (C) is 1.0 to 12.0 mass % based on a total amount of the grease composition.

Engine oil \s and methods for use in soot-producing engines. The engine oil contains a major amount of a base oil and a dispersant reaction product of A) a hydrocarbyl-dicarboxylic acid or anhydride, and B) at least one polyamine, that is post-treated with C) an aromatic carboxylic acid, an aromatic polycarboxylic acid, or an aromatic anhydride, wherein all carboxylic acid or anhydride groups of C) are attached directly to an aromatic ring. A molar ratio of carboxyl groups from components A) and C) to nitrogen atoms from component B) of from 0.9 to 1.3 is used to make the dispersant which also has a molar ratio of component C) to component B) of at least 0.4 and when component B) has an average of 4-6 nitrogen atoms per molecule, a molar ratio of A) to B) is from 1.0 to 1.6.