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Royal Purple HPM Gear Lube is formulated to maximize performance and provide Synthetic Defense™ for marine lower gear units. Its cushioning molecules absorb gear impact to dramatically minimize wear. HPM Gear Lube also significantly reduces friction, which lowers gear unit temperatures, extends equipment life and improves fuel efficiency.

HPM Gear Lube uses Royal Purple’s advanced, proprietary Synerlec® additive technology for maximum water separation and protection from corrosion. It is recommended for equipment requiring an API Service GL-5 or GL-4 fluid.

Water Separation and Protection From Corrosion

Performance Advantages

  • Exceptionally high film strength for dramatic reductions in gear wear and reduced heat to extend the life of your lower unit
  • Improves fuel efficiency
  • Provides maximum water separation and prevents corrosion