2011 F250 Powerstroke How to Rear Differential Cover (AFe Upgrade) (Change fluid) Apr 30, 2016 Cover, Cover Fluid, Cover Rap, Fluid, upgrading Rear Diff cover to AFE and new 75w140. Like 0 Thanks! You've already liked this « MSI/Locking Fluid End Cover Nut » The Fluid & Nirvana – Candy/Molly’s Lips single [Full]