Lubricating composition containing a hindered phenolic hydroxyl group of multifunctional amine salt

Discloses multifunctional lubricating oil composition an additive imparting improved oxidation resistance and friction properties of resulting improvement in fuel economy of an internal combustion engine. More particularly, discloses a lubricating oil composition for internal combustion engines, the lubricating oil composition comprising: a) a major amount of oil of lubricating viscosity; oil soluble hydroxylated amine salts and b) a minor amount of a hindered phenolic, the said salt having the general formula I, wherein a and Q are each independently a C2-C6 alkylene group; R is a methyl or an alkyl or alkenyl group of C2-C24 carbon atoms; Y is hydrogen, C1-C6 alkyl or a-OH; x is an integer of 1 or 2; and z is an integer of 0 or 1,