Lubricating oil compositions

Details Lubricating oil compositions Lubricating oil compositions

C - Chemistry, Metallurgy

10

M

C10M 169/04 (2006.01) C10M 159/20 (2006.01) C10M 163/00 (2006.01) C10M 167/00 (2006.01) F01M 9/00 (2006.01)

Patent

CA 2593933

A lubricating oil composition, more specifically a lubricating oil composition for heavy duty diesel (HDD) engines having a sulfated ash content of no greater than 1.0 mass %, such as from about 0.7 to 1.0 mass %, a sulfur content of no greater than 0.4 mass %, and a phosphorus content of no greater than 0.12 mass % (1200 ppm), such as from about 0.08 to 0.12 mass %; and a TBN of from about 7 to about 15, which lubricating oil composition includes a major amount of oil of lubricating viscosity, at least about 0.5 mass % of an ashless antioxidant selected from sulfur-free phenolic antioxidants, aminic antioxidants, and mixtures thereof, and a minor amount of overbased metal detergent, wherein at least about 60% of the TBN contributed to the lubricating oil composition by overbased detergent is contributed by overbased magnesium detergent

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