Lubricating oil composition

A lubricating oil composition comprising:

• (A) a lubricating base oil;
• (B) an extreme pressure agent;
• and
• (C) a nitrogen-containing ashless dispersant,
• wherein a volume resistivity at 80° C. of the lubricating oil composition is 0.0020×1012 Ωcm or more,
• the component (B)
• contains (B1) a phosphorus-based extreme pressure agent;
• and
• does not contain (B2) a sulfur-containing extreme pressure agent, or contains the component (B2) such that a content of sulfur derived from the component (B2) is 0.01% by mass or less based on a total amount of the lubricating oil composition,
• the component (E1) is
• (B1-1) an alkylamine salt of a phosphate ester;
• or
• a mixture of the component (B1-1) and (B1-2) at least one compound selected from the group consisting of phosphoric acid, phosphate esters, phosphite esters, and salts thereof (excluding compounds corresponding to the component (B1-1)),
• a content of phosphorus derived from the component (B1) is 0.050% by mass or less based on the total amount of the lubricating oil composition, and
• a mass ratio ([phosphorus]/[nitrogen]) of phosphorus derived from the component (B1) and nitrogen derived from the component (C) is 0.60 or more and 2.30 or less.