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Auxiliary Fuel Tank

austingta

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austingta Enthusiast

austingta

Posted
Posted

I'm adding a bed mounted auxiliary tank to the truck.

 

I really wanted to be able to add a tonneau cover in the future, so I had to get a smaller tank than I wanted. I finally settled on a 60 gallon tank.

 

I'm going with this one:

 

https://www.amazon.com/gp/product/B001HVJKSY/ref=oh_aui_detailpage_o05_s00?ie=UTF8&psc=1

 

and the RDS install kit

 

https://www.amazon.com/gp/product/B000K2HO1Q/ref=oh_aui_detailpage_o06_s00?ie=UTF8&psc=1

 

for this truck, as well as a small electric fuel pump

 

https://www.amazon.com/gp/product/B000C1LW0E/ref=oh_aui_detailpage_o04_s00?ie=UTF8&psc=1

 

to assist the gravity flow into the main tank. Many reviewers say that the unassisted gravity flow is very slow, especially when the aux. tank is low. I'm going to add a nice green-lighted (green for diesel) LED 20A switch in the cab somewhere, hopefully in the overhead console.

 

My range should approach ~2000 miles on the highway! Less, of course, if I'm towing.

 

I'll update this thread with pics and details as I install it.

 

 

sdeeter19555 Senior Enthusiast

sdeeter19555

Posted
Posted

In my experience, get a electric pump from Summit (I ran a Carter that would siphon through) and run all your fuel through a goldenrod filter (the water blocking filter).

 

I simply tee'd into the fill line and ran aux tank, Carter pump, Goldenrod, fuel fill line tap using 3/8" hose (use a good hose like Parker). Once you prime the system, it should siphon on its own and keep up with useage. I only ran the pump once in a while to fill the belly tank up into the filler neck...otherwise it siphoned. In my experience, this ULSD tends to draw moisture, so use a water blocking filter.

 

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sdeeter19555 Senior Enthusiast

sdeeter19555

Posted
Posted

The main issue you will find is that, even with a lighted switch, you will forget you have the pump on...I gravity fed, worked well on three trucks that I put a combined 750k miles on...

 

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austingta Enthusiast

austingta

Posted
  • Author
Posted

I have received all the parts except the tank, and I was notified today that it will be delivered Monday. I'll have the switch installed Wednesday (my stereo shop will do just the switch wiring as the audio system is being upgraded then, and everything will be open) so it should be operational this week! I'm doing the tank and plumbing for it myself.

 

I'll notice the switch.

 

I'm driving from Austin to Taos for vacation in a couple of weeks, so I'll give it a good test!

sdeeter19555 Senior Enthusiast

sdeeter19555

Posted
Posted

I thought I would notice the switch too...even had a large red light installed in the dash, and I would still forget about it...

 

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austingta Enthusiast

austingta

Posted
  • Author
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The tank is installed and the switch is installed in the overhead console, but nothing is plumbed yet. I'm going to install the pump next week. So far so good!

austingta Enthusiast

austingta

Posted
  • Author
Posted

Still trying to find time to plumb it and install the fuel pump...

austingta Enthusiast

austingta

Posted
  • Author
Posted

Got it all buttoned up yesterday. Seamless operation and no leaks.

 

9C9A9EB1-BA84-4843-A95C-FF29B8A892C1_zps

 

0AFB7F60-1BB3-4BDB-957D-46FC6757A85E_zps

 

F4BE0648-F5B6-4633-ABBD-E115A1C05219_zps

 

DE2DF41A-0A3D-4627-8616-563BB1F5109F_zps

austingta Enthusiast

austingta

Posted
  • Author
Posted

I'll get some shots of the tank in the bed when the sun is different.

rcmike Enthusiast

rcmike

Posted
Posted

Looks good, I have a auxilary tank also in my bed. its gravity feed and yes takes a while to drain as it gets lower. Is that pump good for diesel fuel ? I looked at ad and did not see anything. Ill be getting this pump if its good for diesel. Your install looks good, thanks for the post.

austingta Enthusiast

austingta

Posted
  • Author
Posted

Looks good, I have a auxilary tank also in my bed. its gravity feed and yes takes a while to drain as it gets lower. Is that pump good for diesel fuel ? I looked at ad and did not see anything. Ill be getting this pump if its good for diesel. Your install looks good, thanks for the post.

Yes, it's well reviewed for diesel.

 

https://www.amazon.com/gp/product/B000C1LW0E/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1

sdeeter19555 Senior Enthusiast

sdeeter19555

Posted
Posted

That's the same pump as on my father's compact diesel farm tractor...it has a lot of hours on it.

 

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  • 1 month later...
austingta Enthusiast

austingta

Posted
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Update: Seamless operation so far. 96 gallon capacity x 23.9 mpg unloaded all highway (50 mile average) = 2294 mile range.

 

I don't expect to see that, but I sure can go a long time between fueling and the truck rides much better with the tanks full.

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