C - Chemistry – Metallurgy – 10 – M
Patent
C - Chemistry, Metallurgy
10
M
C10M 137/04 (2006.01) C10M 135/20 (2006.01)
Patent
CA 2554283
The present invention provides a gear oil composition for vehicle driving systems, more specifically a gear oil composition for vehicle final reduction gears, which can improve a fuel-saving effect by reducing its viscosity and, at the same time, secure bearing fatigue life characteristics. The gear oil composition comprises a base oil (A) and another base oil (B), described below, and at least one species of additive for gear oil, and has a kinematic viscosity of 80 mm2/s or less at 40°C: (A): a mineral-based oil and/or hydrocarbon-based synthetic oil having a kinematic viscosity of 3.5 to 7 mm2/s at 100°C, and (B): a mineral-based oil and/or hydrocarbon-based synthetic oil having a kinematic viscosity of 20 to 52 mm2/s at 100°C.
Ishikawa Kiyonari
Saitoh Kouji
Suganuma Tatsuji
Suzuki Yasuyoshi
Ueno Kenji
Borden Ladner Gervais Llp
Tonengeneral Sekiyu K.k.
Toyota Motor Corporation
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