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HPF PRO Gear Case Lubricant protects your boat's gear case with a multi-viscosity blend of friction reducers, anti-foam agents, and synthetic additives to deliver exceptional durability and reliability. HPF PRO Case Lubricant has a high film strength along with marine-specific inhibitors and emulsifiers that deliver top protection against both corrosion and lubricant breakdown caused by water. Marine specific blending promotes longer gearcase life in watercraft applications and is excellent for heavy duty applications.