| abstract |
(57) [Abstract] [Problem] Heat and heat of gasoline engine oil and other lubricating oil Provided is a lubricating oil composition which is capable of prolonging its life when used as a lubricating oil in which sludge generation due to oxidation deterioration or the like is problematic, and which is extremely excellent in sludge generation suppressing effect. SOLUTION: The lubricating base oil is (A) based on the total amount of the composition. Acylated bissuccinimide, 0.5-20 Mass%, (B) zinc dithiophosphate, 0.05 to 0.3 mass% in terms of phosphorus element amount, and (C) a metal-based detergent, The problem can be solved by a lubricating oil composition containing 0.5 to 4.0% by mass in terms of sulfated ash content. |