Lubricating oil additive, lubricating oil, grease composition, fuel oil additive, fuel oil and oil sludge suppressing method

摘要

A lubricating oil additive, a lubricating oil, a grease composition, a fuel oil additive, a fuel oil and an oil sludge suppressing method capable of effectively suppressing oil sludge in a lubricating oil are provided. A lubricating oil additive for suppressing oil sludge, which comprises titanium dioxide particles having a photocatalytic function as an active ingredient, and wherein the titanium dioxide particles are composed only of anatase type and used by being added to lubricating oil. [Selected figure] Figure 1