Truck - 2008 F250 CCSB, 6.4

I am installing my new 60 gal auxilary fuel tank/tool box combo and have a question.

What is the best way to tap into the system for filling and a return line?

Here is what I am going to do unless someone has a better way or can tell me that this is a bad idea.....

I'm going to cut about 5" out of the vent tube pipe and install two brass reducing tee's for 3/8" fuel line. One for filling the tank and the other for overflow/recirculating when I forget to turn the pump off.

I will have the auxilary tank going into a solenoid valve, then the Carter 4070 pump, then a filter, then into the tee which will be spliced into the factory fill pipe's vent tube.

I am also going to drill and tap the aux tank's fill pipe for a vent to atmosphere.

Please let me know ASAP if you see any issues with this.

Thanks in advance for your help,
Sean

 

I have a different truck, but my suggestion is to use (tap into) the equalizer vent for a return line / dual tank venting. Use the fill as you plan, and tee back to the aux tank from the equalizing vent in the on-board tank.

I've set this up for others, and it works very well.

 

Thanks, I finished it all up about a week ago. It works great!