Gale Banks is on a quest to determine if aftermarket differential covers actually do anything. In the latest video on the topic, he takes a look behind the stock steel rear diff cover to see what's really happening when you're on the road.
Buy Banks new patented Ram-Air Diff Covers here:
https://www.bankspower.com/diffcovers
Watch the full "Behind the Diff Cover" video series here:
https://youtube.com/playlistlist=PLwtmrqcWzLtQR9riOg8mizIEjUX4WBBm