适用于中速筒状活塞柴油船用发动机。该系列润滑油采用高承载性能的添加剂调配，具有良好清净分散及防锈蚀性能，可有效中和燃料燃烧形成的酸性物质。  Formulated for medium-speed trunk piston diesel engines on board ships, coastal vessels, tugboats as well as land-based stationary power-generation equipment.   Blended with high performance salicylate based additive package for high load carrying capacity, good detergency & dispersancy properties, excellent rust & corrosion protection and strong alkalinity reserve to neutralize acids formed from the combustion of distillate fuels.