I don't think the box is any different on the new ones to the older ones. Clean transmission fluid works well too, but is sloppy at first.

If you just keep it clean, it won't rot too quickly on you. My 97 Dakota is a local WI truck, and it was simply cared for kept clean. Sure, it's not mint, and it does have rust, but it's pretty darn presentable even after 20 years!