METHOD FOR PREVENTING OR REDUCING LOW SPEED PRE-IGNITION IN DIRECT INJECTED SPARK-IGNITED ENGINES WITH MANGANESE-CONTAINING LUBRICANT

摘要

Disclosed is a lubricating engine oil composition for a direct injected, boosted, spark ignited internal combustion engine comprising from about 25 to about 3000 ppm of metal from at least one manganese-containing compound, based on the total weight of the lubricating oil. Also disclosed is a method for preventing or reducing low speed pre-ignition in an engine lubricated with said lubricating engine oil composition.