PUREZONE® HDH Gear Oil is amber to dark colored mineral oil. HDH oils are extreme pressure (EP) automotive gear lubricants made from high quality, high viscosity index (VI) paraffinic base oils. Their special additives make them particularly effective at providing high load-carrying protection with excellent rust, corrosion and foam prevention. Excellent oxidation control and thermal stability prevents the formation of sludge and deposits, leaving clean gears after many thousands of miles  service.

PUREZONE® HDH Gear Oils are also able to satisfy the top-up requirements of limited-slip differentials. This oil is recommended for all automotive differentials, as well as transmissions where the manufacturer specifies the use of oils that meet the performance requirements of API MT-1.

PUREZONE® HDH Gear Oil in outdoor industrial applications are suitable for enclosed gear sets. Their high film strength gives low wear rates even in slow speed, heavily-loaded gear sets.