TRUNK PISTON ENGINE LUBRICATING OIL COMPOSITIONS

摘要

A trunk piston engine lubricating oil composition is disclosed. The trunk piston engine lubricating oil composition includes at least (a) a major amount of a basestock selected from the group consisting of at least one Group III basestock, at least one Group IV basestock and mixtures thereof; (b) at least one detergent additive; and (c) at least one dispersant additive; wherein the concentration of the at least one dispersant additive in the trunk piston engine lubricating oil composition is at least about 0.1 wt. % on an actives basis, based on the total weight of the lubricating oil composition.