Extreme Performance Full Synthetic SAE 75W-140 is a multi-grade, highly shear stable, thermally stable and durable extreme pressure synthetic gear lubricant that is specially formulated for use in Harley Davidson V-Twin transmissions and high performance differentials. Extreme Performance Full Synthetic SAE 75W-140 is also recommended for use in heavy-duty or high performance transmissions, aftermarket 5-speed and 6-speed separate motorcycle transmissions and final drives, including standard and limited-slip differentials and shaft drive transmissions requiring the use of a hypoid type gear oil. Extreme Performance Full Synthetic SAE 75W-140 is also recommended for use in differential applications that are found in today’s pick-up trucks, SUVs, heavy equipment that are operated in severe applications such as towing, hauling, steep-hill driving, commercial use, plowing, racing, off-road use, rapid acceleration, frequent stop-and-go and high ambient temperatures. Extreme Performance Full Synthetic SAE 75W-140 is not recommended for use in Harley Davidson Sportsters transmissions and in combined engine/transmission sumps