TRIAX Synergy Gear MT 75W-80 GL-4 is a high performance, full synthetic, manual transmission and gear lubricant designed for passenger cars and SUVs requiring a GL-4 gear lubricant. This product features superior additive content to maximize fluid longevity, shear stability, low temperature fluidity, and high temperature viscosity stability in all types of service. This fluid is optimally balanced for a wide range of manual transmissions with improved friction control, wear reduction, thermal stability, shear stability, rust and corrosion inhibition, and seal protection. Our unique product chemistry provides excellent yellow metal protection for brass synchros and exceptional frictional stability; permitting rapid transmission response, fast and smooth shifting all with no notchy hesitations or slipping.