HDH 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.
SYN GEAR – Full Synthetic Gear Oil
Synthetic oils have a degree of natural ‘multi-grading’, SYN GEAR oils offer a wider operating temperature range than the equivalent grades of mineral-based gear oils. This can be important in applications where low temperature startup may be needed or where there is a wide variation in ambient temperatures.
SYN HDH & SYN TRANS 50
SYN HDH and SYN TRANS 50 use synthetic base oils for excellent stability, long life, extreme temperature operation, improved fuel economy, reduced wear and cleaner components. Mack Trucks Inc approves SYN HDH for use under its GO-J and GO-J Plus programs and also approves SYN TRANS 50 under its TO-A Plus program.