What aftermarket diff cover guys don't tell you!

Aftermarket rear differential covers have been around for decades. But what effect do they have on your gear oil? What's really going on behind the cover? Gale Banks compares popular high-capacity flat-back units with the new patented Ram-Air rear diff cover for Ford Sterling axles.

Watch the full "Behind the Diff Cover" video series here:
https://www.youtube.com/playlist?list=PLwtmrqcWzLtQR9riOg8mizIEj-UX4WBBm

The new Ram-Air rear differential cover fits the 1985-2020 Ford Sterling Axle 12-bolt with 10.25/10.5 ring gear and is available with Amsoil SEVERE GEAR® Synthetic Extreme Pressure Gear Lube.
https://www.bankspower.com/diffcovers

Also avilable for 2001-2019 Chevy/GMC, 2003-2018 RAM with AAM 11.5" or 11.8" 14-bolt rear axle

Coming soon:
2019+ RAM 2500/3500, 2020+ GM 2500/3500 with 14-bolt AAM axle, 11.5" and 12" ring gear

2017+ Ford F250 HD tow pkg and F350 SRW with Dana M275 rear axle
1994-2002 RAM 5.9L and 1999-2007 Ford F350/450 with Dana 80 rear axle