A,  Lubrication

Anti-Wear And Extreme Pressure Additives

The additives that reduce wear of contacting surfaces. The most common additives are zinc- and phosphorus-based. Extreme pressure additives perform their task in a similar manner and are commonly made from varying proportions of chemically bound sulfur and phosphorus. The additives bind with exposed metal surfaces to form low-rupture-strength films that limit damage if the oil film ruptures.

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