Patent ID: 8153565

Claim:
A lubricant composition comprising: (a) an oil of lubricating viscosity present at more than 90 percent by weight; (b) one or more succinimide dispersants comprising a combination of a succinimide dispersant, a boron containing succinimide dispersant, and a sulfur and nitrogen containing succinimide dispersant, present from 0.5 to 3 percent by weight; (c) one or more phosphorus compounds present from 0.1 to 1.5 percent by weight; (d) one or more dimercaptothiodiazoles (e) one or more calcium sulfonate overbased detergents; (f) one or more antioxidants comprising an alkyl diphenyl amine; and (g) one or more friction modifiers; wherein the amount by weight of the dispersant is greater than the amount by weights of the phosphorus compounds and all sulfur compounds be present.