This is the rear axle lubricant used on many heavy duty Ford applications. Check your owner's manual and/or the rear axle assembly for the tag stating use of this fluid. Part number is XY-75w140-QL. This is sold by the quart. There is a limit of 20 quarts per order due to shipping limitions. Shipping is via FedEx Ground Home Delivery ONLY based on your zip code and will show the amount once placed in the shopping cart.