LUBRICATING OIL COMPOSITIONS

摘要

An internal combustion engine crankcase lubricating oil composition has a TBN no greater than 6 and contains the following additives: a metal detergent system having a metal ratio no greater than 3, as the sole detergent system; an organic ashless friction modifier; an oil-soluble molybdenum friction modifier; and a metal dihydrocarbyl dithiophosphate.