US 2017/0121627 A1 · LUBRICATING OIL COMPOSITION FOR INTERNAL COMBUSTION ENGINE

Abstract

Provided are a lubricating oil composition for internal combustion engine, containing a lubricating base oil containing a mineral oil and/or a synthetic oil, (A) an overbased calcium salicylate, (B) an overbased magnesium detergent, (C) a binuclear and/or trinuclear organic molybdenum compound, (D) a phenol-based antioxidant, and (E) an amine-based antioxidant, wherein the component (C), the component (D), and the component (E) are contained in specified contents on the basis of the whole amount of the lubricating oil composition; a method for producing the lubricating oil composition for internal combustion engine; and a lubrication method including using the lubricating oil composition for internal combustion engine.

Claims7

Dependent claims

A lubricating oil composition for internal combustion engine, comprising a lubricating base oil comprising a mineral oil, a synthetic oil, or both, and:

(A) an overbased calcium salicylates;
(B) an overbased magnesium detergent;
(C) a binuclear organic molybdenum compound, a trinuclear organic molybdenum compound, or both;
(D) a phenol-based antioxidant;
and
(E) an amine-based antioxidant,
wherein:
the component (B) has a median diameter of 100 nm or more as measured by photon correlation spectroscopy;
a molybdenum content derived from the component (C) is 200 to 1,000 ppm by mass on the basis of a total amount of the lubricating oil composition;
a content of the component (D) is 0.40 mass % or more on the basis of the total amount of the lubricating oil composition;
and
a content of the component (E) is 0.60 mass % or more on the basis of the total amount of the lubricating oil composition.

9 more elements

Dependencies are inferred from the claim text.

Lubricating oil composition for internal combustion engine

Life of this patent

Lubricating oil composition for internal combustion engine

Life of this patent

Abstract

Claims7