Replace the Gear Oil when you change the differential gears or service the axle in your 2018-2021 Ford 3.0L Powerstroke. Whether you need 75W-90, 75W-140, 80W-90, 80W-140, or 85W-140 gear lube, you can find what you need. Discover the large array of synthetic blend, conventional, and full synthetic lubes we offer. Motorcraft, Nitro Gear & Axle, Royal Purple, Lucas Oil, and AFE are just some of the top brands available at XDP.