| abstract |
A lubricant composition comprising lubricant base oil; (A) in the range of from 300 to 3000 ppm by weight, in terms of elemental molybdenum, of a sulphur-containing organomolybdenum complex, based on the total weight of the lubricant composition, wherein the weight ratio of sulphur to molybdenum is in the range of from 1 to 1.4; (B) a zinc dithiocarbamate wherein the amount of sulphur derived from this component relative to the amount of molybdenum derived from component (A) in terms of the weight ratio is in the range of from 0.2 to 4; and (C) one or more calcium salts of organic acids selected from the group consisting of alkyl phenols, alkyl salicylic acids, aliphatic sulphonic acids and aromatic sulphonic acids, wherein the amount of calcium derived from this component relative to the amount of molybdenum derived from component (A) in terms of the weight ratio is in the range of from 0.2 to 7. |