| abstract |
A lubricating oil composition for an internal combustion engine that prevents deterioration of the combustion state of the ignition internal combustion engine, a method for producing the lubricating oil composition, a spark ignition internal combustion engine using the lubricating oil composition, and the internal combustion engine Providing a lubrication method. A lubricating oil composition for use in a spark ignition internal combustion engine having a total tension per piston of a piston ring tension of 100 N or less, comprising a base oil, (A) a calcium-based detergent, A spark ignition internal combustion engine comprising: B1) a sodium-based additive; and (B2) at least one selected from a magnesium-based additive; and (C) an ashless sulfur-based additive in a predetermined content. Lubricating oil composition, method for producing the lubricating oil composition, spark ignition internal combustion engine using the lubricating oil composition, and lubricating method for the internal combustion engine. [Selection figure] None |