HPF High Performance BRP-0778755 Gearcase Lube 32oz. Use HPF gearcase lubricant for high performance outboards, commercial fleets, rental operations and stern drives. A high-viscosity blend of enhanced friction reducers, anti-foam agents, and synthetic E-P additives systematically deliver exceptional durability and reliability with ultimate film strength. Marine-specific inhibitors and emulsifiers deliver unequaled protection against corrosion and lubricant breakdown caused by water intrusion. H