Patent ID: 7906469

Claim:
A lubricating oil composition having a maximum sulfated ash content of 1.0 mass %, said lubricating oil composition comprising: (a) a major amount of oil of lubricating viscosity; (b) a minor amount of calcium salicylate detergent; (c) an amount of an overbased magnesium detergent providing the lubricating oil composition with from about 200 ppm to about 1250 ppm of magnesium; (d) an amount of an oil soluble sulfur-containing molybdenum compound selected from the group consisting of oil soluble molybdenum dithiocarbamates, dithiophosphates, dithiophosphinates, xanthates, thioxanthates, sulfides, and mixtures thereof, providing the lubricating oil composition with at least 20 ppm of molybdenum; and (e) at least one nitrogen-containing dispersant, the nitrogen-containing dispersant providing the lubricating oil composition with at least 0.09 mass % of nitrogen to the lubricating oil composition; wherein said lubricating oil composition has a TBN of from about 10 to about 15.