Lubricating oil compositons
作者： Richard E. Cherpeck , William M. Kleiser , Wim Van Dam , Alexander B. Boffa , James A. McGeehan
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摘要: A lubricating oil composition having a sulfur content of up to about 0.4 wt. % and sulfated ash 0.5 as determined by ASTM D874 is disclosed which comprises (a) major amount an viscosity; (b) at least one oil-soluble or dispersed oil-stable boron-containing compound greater than 400 ppm boron, based upon the total mass composition; (c) molybdenum-containing 1100 molybdenum, wherein has ratio molybdenum less equal 4:1.
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