Full synthetic, heavy-duty, on-road transmission fluid for automated manual transmissions in Mack® mDRIVE™ and Volvo I-Shift no longer under warranty nor have an extended warranty.

SynTuff® MaxShift Full Synthetic 75W-80 is made with synthetic base fluids combined with a proprietary, thermally stable and durable, multi-functional additive system. It maintains a constant viscosity and film strength in all conditions, which allows for exceptional wear protection on bearings and gears.

Further blended into SynTuff® MaxShift Full Synthetic 75W-80 is Micron Moly®, a proven friction modifier, that quickly plates to metal surfaces to reduce friction and wear and during start-up, minimizes cold welding and vibration.

Because of its high thermal stability and durability performance, SynTuff® MaxShift Full Synthetic 75W-80 keeps sludge, varnish and lacquer deposits from forming on critical components.

Performance Benefits

• Optimized performance for smooth and rapid gear shifting.
• Extended drain and service intervals by maintaining friction durability.
• Improved fuel economy benefits.
• Strong deposit protection throughout the transmission.
• Protects critical components during low-temperature start-up and operation.