Originally Posted by ExcursionDiesel
I wish I had known this before I sent mine to the dealer! I tried siphoning which is impossible.
There is a check valve at the bottom of the tube. So yes, impossible lol. I tried with a 6' piece of fuel hose, and it just stops at about 3' in. (top of tank I assume)
You could go as far as running power to the pump to drain it quicker, but I wasn't in a hurry.