MARINE DIESEL CYLINDER LUBRICANT OIL COMPOSITIONS
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United States of America Patent
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Nov 6, 2015
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Nov 6, 2014
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Disclosed herein are marine diesel cylinder lubricating oil compositions comprising (a) a major amount of one or more Group II basestocks, and (b) a detergent composition comprising (i) one or more alkaline earth metal salts of an alkyl-substituted hydroxyaromatic carboxylic acid having a total base number (TBN) greater than 250, and (ii) one or more high overbased alkyl aromatic sulfonic acids or salts thereof; wherein the aromatic moiety of the alkyl aromatic sulfonic acids or salts thereof contains no hydroxyl groups; and wherein the marine diesel cylinder lubricating oil composition has a TBN of about 5 to about 120.
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