Gear oils have needed improving for years, especially in the hi-performance industry. The Lucas 85W-140 gear oil enjoys the technology Lucas developed in making the "Lucas Heavy Duty Oil Stabilizer", the number one supplemental oil in the heavy duty industry. This formula is fortified with special anti-wear agents and lubricity agents to control wear and drag as well as special additives to control heat. This feature is not found in ordinary gear oils. This gear oil is both excellent for racecars and any heavy-duty application where plain gear oils just aren't good enough.
Made a huge differance in pulling power when installed in the front of my YJ. Zero noise using Castrol full synthetic 75w90. Some front driveline vibration but I'll get the front spline replaced and it should clear up.Great product!