Originally Posted By: Brons2
the more important choice will be, what fluid do you put in the transmission?
Leave the Honda juice in there, it'll be fine.
OP, based on the MM "Maintenance Minder" system in the newer Honda's, they require synthetic (which is what the Original oil / spec is)
If you choose to follow the MM, which i recommend as it'll save you money on maintenance as well as time, use a quality synthetic and go the distance.
Use Amsoil OE, XL, or the SS line of oils if you want. Conventional just isn't a good idea in a 40k van (depending on which model you bought)