| 摘要 |
The present invention provides a lubricating oil composition for internal combustion engine exhibiting excellent fuel-saving performance for a long period of time. The lubricating oil composition for internal combustion engine is characterized by containing a base oil having a kinematic viscosity as measured at 100°C of 2 to 10 mm 2 /s, an aromatic content (%C A ) of 3 or less, and a sulfur content of 300 ppm by mass or less, and the following additives: (1) an alkaline earth metal salicylate-based detergent in an amount of 0.3 to 1.5 mass% as reduced to sulfated ash; (2) a zinc dihydrocarbyldithiophosphate in an amount of 0.03 to 0.10 mass% as reduced to phosphorus; (3) a succinimide-based ashless dispersant having a molecular weight of 500 to 4,000, and an alkenyl group or an alkyl group in an amount of 0.05 to 0.20 mass% as reduced to nitrogen; (4) a phenol-based ashless antioxidant in an amount of 0.05 to 3.0 mass%; (5) an amine-based ashless antioxidant in an amount of 0.05 to 3.0 mass%; (6) a molybdenum dithiocarbamate-based friction modifier in an amount of 0.01 to 0.15 mass% as reduced to molybdenum; and optionally, (7) a viscosity index improver in an amount of 0.01 to 8 mass% as resin amount, the unit mass% being based on the total amount of the composition. |
