Auxiliary fuel tanks question?

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colwood56

New member
Joined
Jan 28, 2023
Posts
3
Location
Michigan
I'm currently thinking about adding a 40-50 gal. gravity fuel tank in the bed of my 2008 Ram 3500.
Looking to find one that is under the bed rails for my gooseneck clearance. My problem is I cannot find a steel one available that will fit. I did find an aluminum one built by RDS. THE QUESTION...does anyone use an aluminum fuel tank without any issues of it cracking at the seams of weld?
 
I'm currently thinking about adding a 40-50 gal. gravity fuel tank in the bed of my 2008 Ram 3500.
Looking to find one that is under the bed rails for my gooseneck clearance. My problem is I cannot find a steel one available that will fit. I did find an aluminum one built by RDS. THE QUESTION...does anyone use an aluminum fuel tank without any issues of it cracking at the seams of weld?
My first steel aux tank lasted a little over 5 years before rusting inside....which is very problematic, to say the least.

My next tank, which is also the present aux. tank in the bed of my Dually, is an RDS aluminum tank made in an "L" shape. 60 gallons and stays several inches below the bed rails, due to the shap of it, I can place my low profile cross bed tool box over the horizontal part of the tank.

I save the fuel pump from my first tank, but I also wanted gravity feed....so I now have both...a 15 gallon/minute pump and the gravity flow into the main truck tank.
 
I also have a Titan 50 gallon tank. 100% recommend this.

Mine sits a little lower than the stock 26 gallon (F250) but I don't go off roading. It's some kind of plastic/fiberglass material.
 
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