TRANSMISSION OIL COMPOSITION

摘要

PROBLEM TO BE SOLVED: To provide a transmission oil composition the coefficient of friction and wear preventing performance of which are improved more than before and which restrains the coefficient of intermetallic friction from being deteriorated due to the oxidative degradation thereof after traveling. SOLUTION: The transmission oil composition is obtained by incorporating (A) an oil-soluble molybdenum compound of 0.03-0.1 mass% in terms of the amount of molybdenum, (B) 0.01-2 mass% antioxidant, (C) a metallic cleaning agent of 0.01-2 mass% in terms of the amount of a metal, (D) a boron-containing ashless dispersant of 0.005-0.05 mass% in terms of the amount of boron and (E) a phosphorus-based extreme pressure agent of 0.01-0.1 mass% in terms of the amount of phosphorus in base oil. COPYRIGHT: (C)2009,JPO&INPIT