System lubrication oil composition for crosshead diesel engine
作者： Shigeki Takeshima
DOI:
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摘要: The disclosure provides (i) a lubricating oil composition including base (A) with kinematic viscosity at 100° C. of 8.2-12.6 mm 2 /s and saturated hydrocarbon content 90% by mass or more, metallic detergent (B) zinc dithiophosphate (C), wherein the is 2.5 mmol more as soap concentration per 100 g composition, phosphorous 200-1000 ppm, number 7.5 mg KOH/g (ii) (A), (B), (C) an amine-based antioxidant (E), (E) 0.3% in terms total 6.5 ppm.
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