Community Forums

Barefoot68 · 07-09-2013, 10:43 PM

Is anyone running an auxiliary tank in truck bed that holds 60 to 80 gal diesel. How do you feed main tank, gravity or pump is pump external or built to pump directly to main tank? Looking to install tank that weighs less than 1000 lbs full. About 60X19X19.

Gemstone · 07-10-2013, 06:59 AM

Mine has an internal fuel pump, which is plumbed into the main fuel filler neck. Found my tank on craigslist for $100. If cost is an issue, you might consider a large fuel tank from a scrapped OTR truck.

Regards
Gemstone

LTZ470 · 07-10-2013, 10:55 AM

In-Bed Fuel Tanks - Transfer Flow, Inc. - Aftermarket Fuel Tank Systems

I bought from these folks last time around...
ALUMINUM AUXILIARY FUEL TANK by Aluminum Tank and Truck Accessories, Inc.

I actually wasn't legal, they sold me a diesel tank and I ran gas in it...
http://www.attatank.com/what-is-legal/

mase-19 · 07-10-2013, 11:07 AM

Look into a titan tank. They are a direct replacement for your under bed fuel tank. Usually add about 60-80L of fuel. https://titanfueltanks.com/

Franka548 · 07-10-2013, 01:36 PM

I run the RDS 60gal with toolbox, it is the same height as the frame rails, so no interference while turning. You didn't say longbed or short bed, it makes a difference, might not be enough clerance for the hitch and tank with a short bed. I also run the RDS fill setup, that gravity fills the main tank through the filler neck, it has a checkvalve that prevents overfilling. The only thing that I have found is that the computer doesn't like the constant fill and the fuel gauge goes to empty after around 300 miles, then it will go back to normal after the auxilary tank is empty and the main tank starts to go down.
Bought both through Northern Tool and Supply.
Frank

LTZ470 · 07-10-2013, 02:19 PM

Quote:

Originally Posted by mase-19

Look into a titan tank. They are a direct replacement for your under bed fuel tank. Usually add about 60-80L of fuel. https://titanfueltanks.com/

Yep, had one of these on my SRW F350 Ford...worked well...

Coaster1 · 07-10-2013, 02:25 PM

I run a RDS 51 gal combo tank/toolbox. I like the size because it fits under my tonneau cover. it drains via gravitiy, controlled with a ball valve.

Barefoot68 · 07-10-2013, 03:31 PM

Thanks for all the help. Seems like Aluminum tanks have best auxiliary tank for me 80 gal is 60x18x18 will work perfect on my 6.5' bed

jesilvas · 07-10-2013, 05:32 PM

RDS Diesel Install Kit for Auxiliary Diesel Fuel Tank - Fits Chevy/GMC Trucks 1999 - 2010, Model# 011029: Amazon.com: Industrial & Scientific
This is what I'd use if you want gravity transfer.

psaint · 07-12-2013, 05:45 AM

Quote:

Originally Posted by Barefoot68

Thanks for all the help. Seems like Aluminum tanks have best auxiliary tank for me 80 gal is 60x18x18 will work perfect on my 6.5' bed

I've used the RDS 90 gallon with their gravity fill system and it worked fine.

I now have a 65 gallon tank and I'm using the Aluminum Tanks & Tank Accessories (ATTA) Freedom Fill which uses a pump and electronics to keep the main tank at 3/4 full. This is a nice system and worth checking out.

myredracer · 07-12-2013, 12:15 PM

Hard to see what you are driving and pulling by the little pic, but I have to ask if you have thought about your available payload capacity on top of your pin or hitch wt, plus the other total cargo wt.? That fuel tank sure would be a lot of extra payload.

Vette Racer · 07-12-2013, 03:44 PM

I also use a RDS 95 gal tank with gravity flow, best thing I ever added. Always leave the gravity flow open and just add fuel to the "big" tank. As was said above, make sure you have the capacity in your weights for such things.

LTZ470 · 07-13-2013, 01:03 AM

Quote:

Originally Posted by myredracer

Hard to see what you are driving and pulling by the little pic, but I have to ask if you have thought about your available payload capacity on top of your pin or hitch wt, plus the other total cargo wt.? That fuel tank sure would be a lot of extra payload.

7 ppg x 80 gal = 560 Lbs

SmokeyWren · 07-13-2013, 02:49 PM

I you're talking diesel, then no problem. All sorts of options available. Least expensive would probably be a tank from Northern Tool, plus the gravity flow connection from the same source.
RDS Diesel Install Kit for Auxiliary Diesel Fuel Tank — Fits 1999–Current Ford and Dodge, and 2011–Current Chevrolet and GMC Trucks, Model# 011025 | Auxiliary, Transfer Skid Tank Accessories| Northern Tool + Equipment

The best bar none, but more costly, would be from TransferFlow. They make bigger under-bed replacement tanks, ordinary in-bed auxiliary tanks, and toolbox/fuel tank combos of various sizes.

Gasoline is a whole 'nother problem. I gave up on a legal auxiliary tank for my F-150 and instead installed the 36-gallon gas tank from a 4x4. 36-gallons total is not great, but much better than the 26-gallons I began with.