CO-DISPERSANT STABILIZED FRICTION MODIFIER LUBRICATING OIL COMPOSITION

摘要

Lubricating oil compositions which contain polycarboxylic acid-glycol esters as friction modifiers in combination with hydrocarbon soluble borated or nonborated alkenyl succinimide dispersant and especially those also containing metal additives are stabilized against tendency of such components to form sediment upon storage through addition of small proportions of a co-dispersant being an oil-soluble hydrocarbyl substituted mono or bis- oxazoline or lactone oxazoline.