| abstract |
PROBLEM TO BE SOLVED: To provide a lubricating fluid which minimizes elastic fluid mechanical shear strength. SOLUTION: The use of simple and composite carboxyl esters of carboxyl-terminated protected polytetramethylene glycol having a specific structure or a mixture thereof is included, and further, an antioxidant, an ultrahigh pressure additive, an abrasion resistant additive, a friction modifier. , A rust preventive, an anticorrosive agent, a cleaning agent, a dispersant, a defoaming agent, a flow point lowering agent, and at least one additive selected from the group consisting of a combination thereof. [Selection diagram] Fig. 1 |