A lubricating oil composition having a high temperature high shear (HTHS) viscosity at 150 C. in a range of about 1.3 to about 2.3 cP is disclosed. The composition comprises (a) a major amount of an oil of lubricating viscosity having a kinematic viscosity at 100 C. in a range of 1.5 to 6.0 mm.sup.2/s; (b) an organomolybdenum compound providing 200 to 1500 ppm by weight of molybdenum to the lubricating oil composition; (c) a calcium-containing detergent providing 750 to 3000 ppm by weight of calcium to the lubricating oil composition; (d) a magnesium-containing detergent providing 200 to 1500 ppm by weight of magnesium to the lubricating oil composition; and (e) a viscosity modifier having a PSSI of 30 or less.

A lubricating oil composition having a high temperature high shear (HTHS) viscosity at 150 C. in a range of about 1.3 to about 2.3 cP is disclosed. The composition comprises (a) a major amount of an oil of lubricating viscosity having a kinematic viscosity at 100 C. in a range of 1.5 to 6.0 mm.sup.2/s; (b) an organomolybdenum compound providing 200 to 1500 ppm by weight of molybdenum to the lubricating oil composition; (c) a calcium-containing detergent providing 750 to 3000 ppm by weight of calcium to the lubricating oil composition; (d) a magnesium-containing detergent providing 200 to 1500 ppm by weight of magnesium to the lubricating oil composition; and (e) a viscosity modifier having a PSSI of 30 or less.

A lubricating oil composition having a high temperature high shear (HTHS) viscosity at 150 C. in a range of about 1.3 to about 2.3 cP is disclosed. The composition comprises (a) a major amount of an oil of lubricating viscosity having a kinematic viscosity at 100 C. in a range of 1.5 to 6.0 mm.sup.2/s; and (b) a molybdenum-succinimide complex providing 200 to 1500 ppm by weight of molybdenum to the lubricating oil composition.

A lubricating oil composition having a high temperature high shear (HTHS) viscosity at 150 C. in a range of about 1.3 to about 2.3 cP is disclosed. The composition comprises (a) a major amount of an oil of lubricating viscosity having a kinematic viscosity at 100 C. in a range of 1.5 to 6.0 mm.sup.2/s; and (b) a molybdenum-succinimide complex providing 200 to 1500 ppm by weight of molybdenum to the lubricating oil composition.

Provided is an internal combustion engine lubricating oil composition which comprises a major amount of an oil of lubricating viscosity; one or more oil soluble or oil dispersible organic acid anhydrides, said anhydride comprising at least one hydrocarbyl or hydrocarbylene moiety having from about 10 to about 400 carbon atoms; and an oil soluble or oil dispersible secondary hydrocarbylamine compound, a tertiary hydrocarbylamine compound, or combinations thereof. Also provided is a method for maintaining and/or increasing fresh oil TBN of a lubricating oil composition while at the same time improving seal performance in an internal combustion engine.

Provided is an internal combustion engine lubricating oil composition which comprises a major amount of an oil of lubricating viscosity; one or more oil soluble or oil dispersible organic acid anhydrides, said anhydride comprising at least one hydrocarbyl or hydrocarbylene moiety having from about 10 to about 400 carbon atoms; and an oil soluble or oil dispersible secondary hydrocarbylamine compound, a tertiary hydrocarbylamine compound, or combinations thereof. Also provided is a method for maintaining and/or increasing fresh oil TBN of a lubricating oil composition while at the same time improving seal performance in an internal combustion engine.

The present invention relates to lubricating compositions comprising a compound of Formula I: ##STR00001##
wherein R.sub.1-R.sub.4 and R.sub.5-R.sub.8 are independently selected from the group consisting of hydrocarbyl groups and hydrocarbyl groups containing heteroatoms, such that the total carbon atoms from counterions Q.sub.1 and Q.sub.2 is from 8 to 76, and molybdate anion (Y) is a binuclear sulfur-containing dianion selected from the group consisting of [Mo.sub.2S.sub.8O.sub.2].sup.2?, [Mo.sub.2S.sub.9O].sup.2?, [Mo.sub.2S.sub.10].sup.2?, and mixtures thereof, and are present in the lubricating composition in an amount sufficient to provide about 100-15,000 ppm molybdenum.

The present invention provides a Molybdenum or Tungsten chalcogenide nanoobject having: (a) an object size comprised from 0.1 to 500 nm, and (b) from 1 to 99% by weight of molecules of formula (I) with respect to the total weight of the nanoobject, wherein: A is OH; X is selected from: (C.sub.1-C.sub.20)alkyl optionally substituted with one or more radicals; a 2 to 20-member heteroalkyl optionally substituted with one or more radicals; and a homopolymer or copolymer comprising a polymeric chain; B is selected from: H, OH, NH.sub.2, (C.sub.1-C.sub.4)alkyl, halogen, phenyl substituted with one or more halogen radicals, benzyl substituted with one or more halogen radicals, C(O)R.sub.3, C(O)(R.sub.7), OC(O)(O)R.sub.3, C(O)(O.sup.), C(O)(O)R.sub.3, OR.sub.3, CH(OR.sub.3)(OR.sub.4), C(OR.sub.3)(OR.sub.4)(R.sub.5), C(OR.sub.3)(OR.sub.4)(OR.sub.5), C(OR.sub.3)(OR.sub.4)(OR.sub.5)(OR.sub.6), NR.sub.1R.sub.2, N.sup.+R.sub.1R.sub.2R.sub.3, C(NR.sub.1)(R.sub.2), C(O)(NR.sub.1R.sub.2), N(C(O)(R.sub.1)) (C(O)(R.sub.2))(R.sub.3), O(CN), NC(O), ONO.sub.2, CN, NC, ON(O), NO.sub.2, NO, C.sub.5H.sub.4N, SR.sub.1, SSR.sub.1, S(O)(R.sub.1), S(O)(O)(R.sub.1), S(O)(OH), S(O)(O)(OH), SCN, NCS, C(S)(R.sub.1), PR.sub.1R.sub.2, P(O)(OH).sub.2, OP(O)(OH).sub.2, OP(O)(OR.sub.1)(OR.sub.2), B(OH), B(OR.sub.1)(OR.sub.2), and B(OR.sub.1)(R.sub.2); provided that when B is H or (C.sub.1-C.sub.4) alkyl, then X is a homopolymer, a copolymer, or a 2 to 20-member heteroalkyl optionally substituted with one or more radicals as defined above.

The present invention also provides processes for the preparation of the nanoobjects, their use as additive for reducing the friction coefficient of a material, and compositions comprising thereof.

A-X-B(I)

The instant disclosure relates to lubricating compositions having improved frictional properties. The lubricating compositions include an oil of lubricating viscosity and a friction modifier that is a C.sub.10 to C.sub.14 alkenyl carboxylic acid ester of an aliphatic diol or polyol, where the double bond of the alkenyl group is within or directly attached to the longest continuous chain of the alkenyl group.

Grease compositions may be made from an oil basestock. For example, a grease composition may include: an oil basestock having: a kinematic viscosity (ASTM D445, 40? C.) of from 320 cSt to 520 cSt, a kinematic viscosity (ASTM D445, 100? C.) of from 22 cSt to 36 cSt, a viscosity index (ASTM D2270) of from 80 to 119, a pour point (ASTM D97) of ?6? C. or less, and a saturate content (ASTM D7419) of 90 wt % or greater; and from 0.5 wt % to 15 wt % of a thickener, by total weight of the grease composition.