Lubricating oil composition containing alkali metal borates...

Details Lubricating oil composition containing alkali metal borates... Lubricating oil composition containing alkali metal borates...

C - Chemistry, Metallurgy

10

M

C10M 141/10 (2006.01) C10M 125/26 (2006.01) C10M 135/20 (2006.01) C10M 137/02 (2006.01) C10M 137/10 (2006.01)

Patent

CA 2627866

A lubricating oil composition with improved frictional and wear performance, especially when the ratio of polysulfides is controlled, wherein said composition comprises a major amount of an oil of lubricating viscosity, at least one alkali metal borate; at least one dihydrocarbyl polysulfide component comprising a mixture of sulfides and having at least 30% dihydrocarbyl tetrasulfide or higher sulfides; at least one non-acidic phosphorus component comprised of a trihydrocarbyl phosphite; at least one dihydrocarbyl dithiophosphate; and a phosphorus component comprising a dihydrocarbyl phosphite component is disclosed.

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