The cylinders of a two-stroke cross-head marine diesel engine characterised by a power output of 4,000 kW per cylinder or greater are lubricated by a cylinder lubricant comprising a basestock of lubricating viscosity, on overbased metal detergent and an oil-soluble sulfur-containing compound or phosphorus-containing compound, thereby to raise the onset temperature of scuffing-type mechanical wear of the cylinder walls.

Os cilindros de um motor diesel marinho do cross-head do dois-curso caracterizado por uma saída de poder de 4.000 quilowatts por o cilindro ou mais grande são lubrificados por um lubrificante do cilindro que compreende um basestock da viscosidade lubrificando, em metal overbased detergente e em um composto composto ou phosphorus-containing sulfur-containing oil-soluble, para levantar desse modo a temperatura do início do arrast-tipo desgaste mecânico das paredes do cilindro.

 
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