Lubricants with the combination of a molybdenum compound, a phosphorus compounds and dispersants
AssigneeThe Lubrizol Corporation
InventorMichael P. Gahagan
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Abstract
This invention relates to a lubricating composition comprising a major amount of an oil of lubricating viscosity, (A) an antiwear improving amount of at least one molybdenum containing composition, (B) at least one phosphorus antiwear or extreme pressure agent, and (C) at least one dispersant, provided that the lubricating composition is free of polysulfurized olefins. The lubricating compositions have improved antiwear properties. When the lubricating composition is used in a manual transmission, the amount of brass wear is reduced.
Claims13
A lubricating composition comprising a major amount of an oil of lubricating viscosity, (A) an antiwear improving amount of at least one molybdenum containing dithiocarbamate or thiophosphate, wherein (A) is present in an amount to provide from about 100 to about 900 ppm molybdenum to the lubricating composition, (B) at least one phosphorus antiwear or extreme pressure agent, and (C) at least one dispersant, provided that the lubricating composition is free of sulfurized olefins, wherein the phosphorus antiwear of extreme pressure agent is a phosphoric acid ester or salts thereof reacted with ammonia or an amine.
Dependencies are inferred from the claim text.