Aux. Fuel Tank

[Lloyd]

Does anyone towing a 5er with a s/b have an aux. fuel tank in the box? If so, what brand do you have and what size is it. Gallons and dimensions.
I use to have one with my other 5er but sold it. It was home made. About 42 gal. Fit in front of the hitch real nice and didn't stick up where the nose of the 5er could reach it.

[oldman]

I have a l/b and use a RDS unit from Northern Tool. 91 gallon with tool box on top. lid covers tank cap for security. Models are available for s/b. Height of mine is top of rails.

[lenny]

I have a 55 gallon tank that I had welded up for me. Extra capacity is great, and I don't see any way it could ever interfere with the hitch. It is between the wheel wells, approx. dimensions are 48wideX16deepX15high. The front of the rails the hitch mounts on are 18 inches from the front of the box. I got a diesel fill kit from Northern Tool, so it is plumbed right in to my main tank. Check valve stops flow when it is full. I also put a cartridge style fuel filter inline to take care of any debris I may encounter. I just put it in the day before our first trip, and after running 630 gallons through it, I am happy. Once my fuel gauge starts moving, I begin planning where I will stop.

Here is the check valve in the fill line:





And the tank itself:

[joe_agogo]

I have a 40 gal tank/tool box combo from transferflow.



Great product.

[cwit]

I have a 48 gal. L shaped tank from Northern tool works and looks great. Yes my truck is a 6 1/2 ft. bed.

[Lloyd]

Lenny:
Do you have to cut a hole in the floor to hook up the fuel lines? Where did you install the extra filter?

[lenny]

Yes, I drilled a hole in the floor of the bed. 3/4" if I remember, so I could put a rubber grommet in to gaurd against rubbing. The fuel filter I scured to one of the rails running across the box. Just a couple of hose straps secured with self tapping screws.





This is from the rear tire looking forward. Inlet is on the left, and outlet on the right. Due to space, I had to come under the fill line, and then loop back to the check valve I installed in it.



This veiw is from underneath looking straight up. The drivers side rear tire would be to the left. On the left side of the pic you can see part of a mud flap I put in the wheel well to protect these components from rocks and mud. I have noticed that the aux tank does not empty right out (gravity feed). This may be due to debris in the filter, or could be the restriction of the filter itself. It is still the first filter, with all the debris from the construction of the tank. When I change the oil, I will change the filter and see if that makes a difference or not. It would be pretty easy to set up an inline pump with a switch in the cab to drain it right out otherwise. I will see what a new filter does first though.

[hollardawg45]

Check out the Transfer flow website. They are the leader in aux fuel tanks. I have a 50 gal aux tank in the bed and love it. www.transferflow.com

[Cobra909]

Another option here that doesn't take up any bed room.

http://www.titanfueltanks.com/

[Lloyd]

Thanks everyone for your feed back.
I hate to loose my bed space because I usually carry a couple jugs of water and the generator in that area. But when I look at the price of the after market tanks------
Lenny, thanks for the pictures, You certainly do a good job posting them

[Hamops]

Nice pictures Lenny. The pictures give me an indication of what I'm in for when I get around to installing an auxiliary tank. Was there any reason that for not mounting the filter in the box beside the tank? I'm looking at installing a spin-on filter holder at the outlet of the tank.

I've decided on TransferFlow's 37 USG tank because it fits inside the box below the level of the rails. I'd like a bigger tank, but even with this tank, I'm pushing the GVWR of our TV.

[lenny]

I went underneath the box because the outlet from the tank is right at the bottomon theside of thetank. No pump, all gravity fed. I did not want to put the filter assembly upside down, because that would make a mess in the box when changing. So this is pretty much what I was left with. So far I am really happy with it.

[hollardawg45]

Make sure that whatever Aux Tank you install of have installed is DOT Cretified. If you have an accident and there is damage caused by a fuel spill from a non certified fuel tank your insurancemay not cover it.

If you drive in California witha non certified tank, they may impound your rig.

[CamperNJ]

I have a 98 gallon Transfer Flow and love it!!