Lubricating oil compositions for marine engines

Details Lubricating oil compositions for marine engines Lubricating oil compositions for marine engines

C - Chemistry, Metallurgy

10

M

C10M 141/10 (2006.01) C10M 125/04 (2006.01) C10M 135/18 (2006.01) C10M 137/14 (2006.01) C10M 141/00 (2006.01) C10M 167/00 (2006.01) C10M 169/04 (2006.01)

Patent

CA 2480935

The lubricating compositions of the present invention are designed for use in a four stroke outboard marine engine and contain an oil of lubricating viscosity, an ashless dispersant, a metal detergent, a rust inhibitor system comprising a combination of certain rust inhibitors with an ethoxylated alkyl phenol, a relatively high amount of ZDDP, and an amount of a molybdenum compound sufficient to provide the composition with 15-1,000 ppm by mass of molybdenum. An amount of about 15 ppm to 1,000 ppm by mass of molybdenum from a molybdenum compound has been found to be effective as an antiwear agent in combination with the high levels of ZDDP.

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