SHOCK ABSORBER LUBRICANT COMPOSITION, SHOCK ABSORBER, AND METHOD FOR MODIFYING FRICTION OF SHOCK ABSORBER LUBRICANT

摘要

Problem: To provide a shock absorber lubricant composition, shock absorber, and method for modifying the friction of the shock absorber lubricant composition whereby a balance between operational stability and ride quality can be achieved, particularly at extremely low vibrational amplitudes. Solution: A shock absorber lubricant composition containing a base oil and a friction modifier, wherein: the friction modifier contains pentaerythritol esters; the pentaerythritol esters include pentaerythritol tetraester at the highest proportion, or in an amount of 50 mass% or greater; and the pentaerythritol ester content is 0.5 mass% or greater.