A lubricant composition includes water, graphite, a thickener and an alkylphenol ether sulfate dispersant.

A lubricant including an ionic liquid, which contains a conjugate acid (B.sup.+) and a conjugate base (X.sup.) and is aprotic, wherein the conjugate acid contains a straight-chain hydrocarbon group having 10 or more carbon atoms, and wherein an acid that is a source of the conjugate base has a pKa in water of 0 or less.

A lubricant including an ionic liquid, which includes a conjugate acid (B.sup.+) and a conjugate base (X.sup.), and is protic, wherein the conjugate acid includes a straight-chain hydrocarbon group having 10 or more carbon atoms, and wherein the conjugate base is represented by the following general formula (1):

##STR00001##

where n is an integer of from 0 to 6 in the general formula (1).

A composition of an oil-soluble ionic detergent that does not contribute metal ions to the composition, and which comprises a quaternary non-metallic pnictogen cation and an organic anion having at least one hydrocarbyl group of sufficient length to impart oil solubility to the detergent, the detergent having a total base number (TBN) to total acid number (TAN) ratio of at least 2:1 imparts ash-free basicity to a lubricant composition.

The present invention relates to lubricant composition comprising: a corrosion inhibitor comprising A1 and A2: A1: 0.3-3 wt. % of one or more octadecylamine NC.sub.10-20 alkanoyl sarcosinates, A2: 1-5 wt. % of one or more substances selected from lanolin magnesium soap, lanolin calcium soap, lanolin barium soap, lanolin lithium soap, barium petroleum sulfonate and sodium petroleum sulfonate, 0.2-2 wt. % of one or more surfactants selected from Span-80, AEO-9 and TX-4; 10-40 wt. % of a lubricant base, 0.2-2 wt. % of fullerene C60, 50-80 wt. % of a solvent selected from D80, D100 and D110, and optionally, a propellant gas; all wt. % percentages are based on the total weight of the lubricant composition.

The present invention relates to lubricant composition comprising: a corrosion inhibitor comprising A1 and A2: A1: 0.3-3 wt. % of one or more octadecylamine NC.sub.10-20 alkanoyl sarcosinates, A2: 1-5 wt. % of one or more substances selected from lanolin magnesium soap, lanolin calcium soap, lanolin barium soap, lanolin lithium soap, barium petroleum sulfonate and sodium petroleum sulfonate, 0.2-2 wt. % of one or more surfactants selected from Span-80, AEO-9 and TX-4; 10-40 wt. % of a lubricant base, 0.2-2 wt. % of fullerene C60, 50-80 wt. % of a solvent selected from D80, D100 and D110, and optionally, a propellant gas; all wt. % percentages are based on the total weight of the lubricant composition.

A grease composition includes a thickener, a base oil, and an additive. The additive contains 0.1 to 10% by mass of a molybdenum-containing extreme-pressure agent, 0.1 to 10% by mass of Na sebacate, and 0.1 to 5% by mass of a sulfonate. A penetration of the grease composition is 235 to 370.

A lubricant composition, including 20 to 99.5 wt. %, based on a total weight of the lubricant composition, of a base oil, the base oil having a solubility for ionic liquid methyltrioctylammonium-bis(fluorosulfonyl)imide of at least 3 wt. % at a room temperature of 20 C. The base oil contains a base stock A in a proportion of at least 50 wt. %, based on a total weight of the base oil, the base stock A having a solubility for the ionic liquid methyltrioctylammonium-bis(fluorosulfonyl)imide of at least 3 wt. % at a room temperature of 20 C. The lubricant composition further includes 0.5 to 80% wt. %, based on the total weight of the lubricant composition, of an ionic liquid whose anion is bis(fluorosulfonyl)imide.