| abstract |
An organic metal friction modifier and / or a lubricant composition containing an organic friction modifier is provided with an additive composition that reduces the corrosion degree of the lubricant composition against non-ferrous metals. The additive composition of the present invention comprises (a) an azole compound, (b) a non-overbased sulfonate compound, (c) at least one carbodiimide compound, and (d) a second compound. An antioxidant selected from a secondary amine compound, a phenol compound, or a dimer of such a phenol compound. [Selection figure] None |