A lubricating oil composition containing a base oil, an organic molybdenum compound, and a metallic detergent, wherein the metallic detergent contains calcium sulfonate, and the content of the calcium sulfonate in terms of calcium atoms is 0.12% by mass or more based on the mass of the composition, the content ratio of molybdenum atoms derived from the organic molybdenum compound to soap groups derived from the metallic detergent based on the lubricating oil composition, [Mo/soap groups], is 0.02 or more at a mass ratio, and the HTHS viscosity at 150? C. is 1.3 mPa.Math.s or more and less than 2.3 mPa.Math.s. The lubricating oil composition has low viscosity and excellent lubricity.

The instant disclosure is generally directed to low viscosity, low volatility lubricating compositions. The lubricating composition of the instant disclosure includes an oil of lubricating viscosity that contains a lubricating base oil and a hydrocarbon oil. The hydrocarbon oil makes up least 20 wt % of the oil of lubricating viscosity and has a kinematic viscosity of less than 3.7 c St at 100? C. and a NOACK volatility (measured by ASTM D5800) of less than 25 wt %. The lubricant composition further includes a polyalkenyl succinimide dispersant, and, optionally, other formulation additives. The lubricating compositions have been shown to increase fuel economy in internal combustion engines.

A compound represented by the following general formula (B1). Further disclosed is a corrosion inhibitor (B) containing one or more selected from the compound represented by the following formula (B1). Further disclosed is a lubricant composition containing an ionic liquid (A) and the corrosion inhibitor (B). The compound and the corrosion inhibitor are excellent in stability in any of a high vacuum, a low-temperature environment, a high-temperature environment, and an ordinary temperature-ordinary pressure environment, and the lubricant composition containing the corrosion inhibitor is excellent in metal corrosion resistance, solubility, and low evaporability. In the general formula (B1), M is an alkali metal and RB11 is an alkylene group having 1 to 19 carbon atoms.

A compound represented by the following general formula (B1). Further disclosed is a corrosion inhibitor (B) containing one or more selected from the compound represented by the following formula (B1). Further disclosed is a lubricant composition containing an ionic liquid (A) and the corrosion inhibitor (B). The compound and the corrosion inhibitor are excellent in stability in any of a high vacuum, a low-temperature environment, a high-temperature environment, and an ordinary temperature-ordinary pressure environment, and the lubricant composition containing the corrosion inhibitor is excellent in metal corrosion resistance, solubility, and low evaporability. In the general formula (B1), M is an alkali metal and RB11 is an alkylene group having 1 to 19 carbon atoms.

A lubricant composition includes a base oil and an additive package. The additive package includes a seal compatibility additive chosen from a halide seal compatibility additive, an epoxide seal compatibility additive, a boroxine seal compatibility additive, a sulfonate ester seal compatibility additive, and combinations thereof. The alkoxylated amide and the ester are set forth in general formulas A and B, respectively: In general formulas A and B, each R.sup.13, R.sup.II, R.sup.III, and R.sup.IV, is, independently, a linear or branched, saturated or unsaturated, hydrocarbyl group. In addition, at least one of R.sup.II and R.sup.III include an alkoxy group, and R.sup.IV includes an amine group.

##STR00001##

A lubricant composition includes a base oil and an additive package. The additive package includes a seal compatibility additive chosen from a halide seal compatibility additive, an epoxide seal compatibility additive, a boroxine seal compatibility additive, a sulfonate ester seal compatibility additive, and combinations thereof. The alkoxylated amide and the ester are set forth in general formulas A and B, respectively: In general formulas A and B, each R.sup.13, R.sup.II, R.sup.III, and R.sup.IV, is, independently, a linear or branched, saturated or unsaturated, hydrocarbyl group. In addition, at least one of R.sup.II and R.sup.III include an alkoxy group, and R.sup.IV includes an amine group.

##STR00001##

The invention provides lubricating composition comprising: an oil of lubricating viscosity, and an oxyalkylated hydrocarbyl phenol, wherein the oxyalkylated hydrocarbyl phenol is substituted with at least one aliphatic hydrocarbyl group of 40 to 96 carbon atoms, and wherein the oxyalkylated hydrocarbyl phenol is substantially free of aromatic hydrocarbyl groups. The invention further relates to a method of lubricating a mechanical device (such as an internal combustion engine) with the lubricating composition. The invention further relates to the use of the oxyalkylated hydrocarbyl phenol in the lubricating composition to a passenger car internal combustion engine at least one of (i) control of fuel economy, (ii) control of corrosion, (iii) cleanliness, and (iv) control of bore wear.

The invention provides lubricating composition comprising: an oil of lubricating viscosity, and an oxyalkylated hydrocarbyl phenol, wherein the oxyalkylated hydrocarbyl phenol is substituted with at least one aliphatic hydrocarbyl group of 40 to 96 carbon atoms, and wherein the oxyalkylated hydrocarbyl phenol is substantially free of aromatic hydrocarbyl groups. The invention further relates to a method of lubricating a mechanical device (such as an internal combustion engine) with the lubricating composition. The invention further relates to the use of the oxyalkylated hydrocarbyl phenol in the lubricating composition to a passenger car internal combustion engine at least one of (i) control of fuel economy, (ii) control of corrosion, (iii) cleanliness, and (iv) control of bore wear.

Provided are a lubricating oil composition containing (A) a specific amide compound and (B) a metal-based detergent, wherein the content of the metal-based detergent (B) as converted in terms of metal atom is, based on the total amount of the composition, more than 300 ppm by mass and 1,000 ppm by mass or less, and having a high intermetallic friction coefficient and excellent clutch anti-shudder performance; and a lubrication method and a transmission using the composition.

Provided are a lubricating oil composition containing (A) a specific amide compound and (B) a metal-based detergent, wherein the content of the metal-based detergent (B) as converted in terms of metal atom is, based on the total amount of the composition, more than 300 ppm by mass and 1,000 ppm by mass or less, and having a high intermetallic friction coefficient and excellent clutch anti-shudder performance; and a lubrication method and a transmission using the composition.