Why would Extreme Pressure oil additives damage Gears?

The primary reason Extreme Pressure oil additives damage Gears is because the chlorine, potassium-borate and sulfur-phosphorus extreme pressure (EP) additives, primarily used for industrial gear lubrication, protect through chemical reaction.

These EP oil additives are temperature-activated and react with the metal to form a sacrificial film.

EP oil additives can cause severe damage through chemical reaction:

• Extreme pressure additives such as the sulfur phosphorus types can be “too chemically reactive,” resulting in polishing wear. 

This type of wear reduces gear accuracy by