作者: Taisuke Miyoshi , Malcolm Waddoups , Rolfe John Hartley
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摘要: A molybdenum-free lubricating oil composition exhibiting improved fuel economy and retention properties, which comprises: (a) a base stock compound of at least 50 wt.% mineral oil, the having viscosity 4.0 - -5.5 mm2/s 100°C, 95 or more saturates, 25 less napthenics, NOACK volatility 15.9 % less, kV 5.5 100 °C index 120; (b) one calcium detergent (c) organic friction modifier, wherein has about 15 contains from 0.058 to 0.58 detergent.