Patent ID: 7902131

Claim:
A lubricating composition, comprising: a major portion of a lubricating base oil, and an additive composition comprising, as a percentage of the lubricating composition: (1) an alkylated diphenylamine, at about 0.25 to about 1.0 mass %, of the following formula wherein R 1 is chosen from alkyl and alkaryl groups having from 4 to 9 carbons atoms per each group, R 4 is chosen from hydrogen, alkyl and alkaryl groups having from 4 to 9 carbons atoms per each group, and R 2 and R 3 are each hydrogen; (2) a 3:7 mass ratio mixture of C 6 -C 18 monoglyceride and C 6 -C 18 di-ethoxylated amide, at about 0.5 to about 2.0 mass %; and (3) a monosuccinimide or di-succinimide dispersant, at about 2 to about 5 mass %; wherein the lubricating composition is free of molybdenum, and wherein the phosphorus level in the lubricating composition is from 0 to less than 0.08 mass %.