Get the Gear Oil you need when swapping gears or servicing the axles in your 1999-2003 Ford 7.3L Powerstroke. Synthetic blend, full synthetic, and conventional gear lubricants are available for a wide range of applications. Get the 75W-90, 75W-140, 80W-90, 80W-140, or 85W-140 lube you need for your vehicle. Top manufactures like Royal Purple, Lucas Oil, AFE, Motorcraft, and Nitro Gear & Axle are available at XDP.