Gear oils have needed improving for years, especially in the high performance industry. Lucas developed in making the "Lucas Heavy Duty Oil Stabilizer", the number one supplemental oil in the heavy duty industry. This gear oil formula is fortified with special anti-wear agents and lubricity agents to control wear and drag as well as special additives to control heat. These features are not found in ordinary gear oils. Lucas Pure Synthetic Gear Oils are super-slick, long lasting lubricants designed especially for heavy duty or high performance applications. Contains special anti-wear and lubricity agents Insures less gear noise and longer bearing life Excellent for high performance and heavy-duty applications Helps to control heat