MARINE ENGINE LUBRICATION
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United States of America Patent
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Issued Date -
May 8, 2014
app pub date -
Nov 1, 2013
filing date -
Nov 2, 2012
priority date (Note) -
Abandoned
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Abstract
Two-stroke cross-head marine compression-ignited engine system lubrication is effected by a composition comprising a major amount of an oil of lubricating viscosity containing at least 50 mass % of a basestock containing greater than or equal to 90% saturates and less than or equal to 0.03% sulphur or a mixture thereof, and respective minor amounts of an oil-soluble overbased metal alkyl salicylate detergent and an oil-soluble polyalkenyl-substituted carboxylic acid anhydride or an oil-soluble alkylated phenol. The presence of the anhydride or the phenol improves asphaltene dispersency in the lubricant.
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