2019 RAM 3500 Crew Cab 6.7-liter Dually

Alan Sheain Jr.

It’s been a while since we checked in with Alan Sheain, who at the time was telling us about his experience with the Banks PedalMonster throttle booster. This new installment focuses on his experience using the Banks Ram-Air Differential Cover, and what it’s done for his truck.

Alan’s 2019 RAM 3500 Crew Cab 6.7L dually basically lives with some sort of trailer attached to it and is used for transporting anything from huge commercial equipment to livestock, with loads up to 40,000 lbs. Alan recently received a service bulletin that advised to change the diff fluid every 10k to 15k miles when the truck sees severe use. But he likes to change the fluid every time he changes his motor oil. After putting on the Ram-Air Differential Cover he changed it as recommended and the fluid came out golden-brown, almost indistinguishable from how it went in.

“Every other time that I changed it with the factory diff the fluid would come out burnt, like dark, stinky, and gooey. Having to take that cover off sometimes you’d mess up the gasket, too. I love the fact that I finally have a drain plug! Since the fluid came out so well with the Banks cover, the first fluid change I decided to stage a little experiment, and let it go three times longer without changing it. I took the truck to Precision Transmission in Amarillo, TX to service the rear end. The tech, Trent Crich and I thought it would be a great idea to document the fluid change with a video, and both were pretty amazed at what we found. There was no smell to the fluid, no more metal fragments on the magnet, and that tells me that the oil is staying temperate, and keeping its viscosity. That’s pretty impressive!” Check out the video here.