I have a DSM t-25 set-up I'm working on, it is almost finnished, I want to know waht size of a hose to use for the oil drain? I got the adapter with the 3/8 npt to 3/8 barb, it looks a little small, should I upgrade to 1/2 instead?

 

Yep. I would suggest -10 braided, which is pretty darned close to 1/2"

Craig