LUBRICANT COMPOSITION FOR DIESEL ENGINE, AND METHOD FOR IMPROVING BASE NUMBER HOLDING PERFORMANCE OR METHOD FOR IMPROVING LONG-DRAIN PERFORMANCE

摘要

To provide a lubricant composition for diesel engine that can hold a base number for a long time and improve long-drain performance.SOLUTION: A lubricant composition for diesel engine contains a lubricant base oil, a hindered amine compound, a phosphorus-containing antiwear agent, and a metal cleaner.SELECTED DRAWING: None