Lubricating oil composition
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United States of America Patent
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Jun 28, 2016
Grant Date -
Jan 15, 2015
app pub date -
Nov 9, 2012
filing date -
Mar 29, 2012
priority date (Note) -
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Abstract
A lubricating oil composition is provided having excellent torque capacity, shifting properties, and anti-wear properties for wet friction materials, which can maintain initial torque capacity and shifting properties for a long period of time, suitable for automatic and/or continuously variable transmissions. The lubricating oil composition contains a lubricating base oil and based on the total mass of the composition (A) 0.5 percent by mass or more of a fatty acid amide compound represented by formula (1); (B) 0.05 percent by mass or more of thiadiazole; and (C) 0.1 percent by mass of a phosphorus-containing additive, and contains sulfur in an amount of 0.2 percent by mass or more based on sulfur and phosphorus in an amount of 0.2 percent by mass or less based on phosphorus, the ratio of the sulfur basis percent by mass/the phosphorus basis percent by mass (S/P) being from 3.0 to 5.0:
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