Good thread. This is my first Ram 3/4 ton, so I'm still learning. 2 things surprise me about this topic, after owning only GM and Ford 3/4ton's before this. First is the change interval on the differentials being only 30K miles if you tow. Second is no drain plug on the cover or axle? Really? Oh well, at least I'm aware of it now and will plan to do it at 30K. Might check into covers with drain plugs, though.