B,  Lubrication

Boundary Lubrication

A form of lubrication effective in the absence of a full fluid-film lubrication. Boundary lubrication is made possible by the inclusion of certain additives in the lubricating oil that prevent excessive friction and scoring by forming a film whose strength is greater than oil alone. These additives include oiliness agents, compounded oils, anti-wear agents, and extreme pressure agents.

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