I am looking at these for the new truck. Probably in the 40-60 gallon range. Maybe with a tool box.Those of you that have/had them, what are your likes and dislikes? What about brands? Good, better, best,,,, and why?

I have a 35 gallon tank in the bed of my Dodge dually and simply love it. Best money I've ever spent on something that wasn't motorcycle related. I love that I don't have to check out the fuel stations ahead of time to make sure I can get in, and, more importantly out, with that 40' toyhauler in tow. I can carry enough fuel to only have to fill up at the end of the day when the 5th wheel is not hooked up. Lowers the daily stress level considerably, especially if you're traveling the two lane highways with fewer big ol' truck stops.I like taking breaks at rest stops, or parks rather than using the fuel stop as break time. I like being on my schedule rather than the trucks fuel tank's schedule.Okay, the cons...uh...well...hmm...it does cost more when I fill both tanks.

I have a simple 25 gallon Enduraplas tank. They make a 55 gallon tank also.It is a simple transfer tank with a nozzle that you manually fill your tank with. I use a 12 volt jump box to power the built in pump.It does the trick no installation required. I can move to my next truck or put it in another truck in minutes. Not quite as convenient as a piped in tank but just as useful. Easily removable if you want the space back.Works great. Use it when you want . Remove it if you want.Very versatile and flexibleEnduraplas Tank

60 ga. RDS gravity fed. Get fuel when it’s cheap and roll on.

Dislikes:They take up bed spaceAlmost always have to drill through the bed to mount themAlmost always have to drill through the bed to wire themThe nozzle and pump assembly get messy and stinky.I prefer OEM tank replacements from Titan Truck or other manufacturers.

I have a 41 gallon tank from Aluminum Tank Industries. I'm pleased with the quality and the price was good. It is gravity feed but I also installed an electric valve and indicator light. The gravity feed filler neck valve works fine; I just didn't trust it completely from the outset.I reset my trip meter and use the MPG readout to calculate my fuel usage per fill up. I would prefer to have an in-cab gauge for the auxiliary, but I went on the cheap.I agree with what FJ12 posted. Less stress and peace of mind. I also buy less expensive fuel; I calculate tank payback to be about three years.I average 11.2 MPG towing which easily gives me 750 miles of range; more than I can do in a day. Most round trips I take, I can do on a single fill up, then hit Costco when I get home.

In bed diesel tanks | Good Sam Community

73 Replies

ksss
Explorer
Jun 05, 2020
Enduroplas makes tanks that we use in construction that fit in the back of the pickup and are made of plastic, easy to move and come in a multitude of sizes and configurations. Might be an option for some, they come with an electric pump. They also make them for DEF but I doubt many on here would need that unless you have a fleet of off road equipment.
hornet28
Explorer
Jun 05, 2020
I have a TransferFlo 50 gal in bed. I've had this tank for 17 years and it's more than paid for itself. When I changed it from the 02 to the 07 I had to buy a new brain to get the auto transfer to work.
I have a brother who was delivering RVs for awhile. With his truck I used an electric pump with a switch in the cab and a small flashing multi colored LED light that was on when the pump was on. He couldn't forget to turn the pump off. Plus I wired it so that it was switched power. I also installed a fuel gauge in the cab for him
Edd505
Explorer
Jun 05, 2020
Way too many negatives, I have an 80 gallon in bed with a GPI pump. Fuel is 75 miles one way unless I want to pay 50-75 cents over other stations. I did get a TSD card for their discounts. Well worth it, beat to death on multi forums. I fuel the bed tank and truck from the tank, always fresh fuel. The tank and truck give me a conservative 1000 mile range, I fuel when I want not when I have to. The tools box? Enough tools & trouble shooting equipment to fix most roadside issues. Sprays, oil, DEF, fuses, wire, compressor, tow straps, jumper cables, battery charger, 20V impact driver, stuff fr fixen. The pump in the photo died and was replaced with the GPI transfer pump. There is a B&W Companion hitch in the bed with the tank & tool box, it's an 8FT bed.
FishOnOne
Nomad
Jun 05, 2020
Lantley wrote:
FishOnOne wrote:
Lantley wrote:
valhalla360 wrote:
Don't forget to account for it when considering payload. a 50gal metal tank is going to eat up around 500lb of payload when full.

The OP has a 2020 dually with lots of payload.
Many choose to go with a DRW vs. a questionable or borderline SRW set up to eliminate any payload concerns.
Some are OK with cutting it close or trying to precisely match payload. Many have decided to step it up to have more than ample payload so they can add cargo or go to a larger trailer without payload concerns.

And many choose a truck with ample fuel capacity from a factory tank.

Touche`Fish.
I have to agree. The 36 gallons GM gives you is kind of the bare minimum required. I would prefer the larger 45 gallon? tanks Ford provides.
Why can't GM get a small thing like lager fuel capacity right!
If I had 45 gallons to start with I may not have an Aux. tank.
My prior PSD excursion had a 45 gallon tank and life was good.
GM wants to be commercial minded but they are stuck in Joe Consumer mode. They need to think more outside the box or shall I say outside of the tank when it comes to fuel capacity.

The Super Duty provides a factory 48 gallon tank and if you want more and keep your bed space you can purchase a 60 gallon replacement tank from S&B and replace it yourself.

With the improved fuel economy a 48 gallon tank would be the ticket for me.

Link
Lantley
Nomad
Jun 05, 2020
@ Huntingdog While I get your point 9 gallons is not going to keep you from getting an Aux tank. 9 gallons is about 100 miles of towing. I consider that significant.
Now in the wide open west 9 gallons may not mean a lot. But on the congested east coast the additional 9 gallons maybe enough to get you through DC and Baltimore without stopping for fuel. It may get you through NY and NJ without stopping. IT helps in the Boston and CT stretch as well.
There can be a lot of congested roads in a 100 mile span around here.
Once you leave the interstate getting fuel in metropolitan or suburban areas is a hassle. It's not that fuel is unavailable as you travel up 95 in VA and around DC. Its that you have to deal with lots of traffic and smaller stations. 100 miles worth of fuel makes it a lot more manageable.
To your point I did get an Enduraplas tank to give myself more freedom. I don't need to go another 500 miles or another full day.
I just need the flexibility to stop in convenient places and the ability to bypass the congested places.
With my Excursion I had a 44 gallon tank and never worried about fuel because I had that 1/4 tank cushion. With my smaller tank GMC trucks I have to plan more carefully in order to clear the congested areas without needing fuel.
Beaker
Explorer
Jun 05, 2020
40gal/toolbox from TransferFlo. Pricey but money is soon forgotten after 1 trip. Stopping when and where you want makes traveling much more fun, especially when travelling with dogs.
Huntindog
Explorer
Jun 05, 2020
Lantley wrote:
FishOnOne wrote:
Lantley wrote:
valhalla360 wrote:
Don't forget to account for it when considering payload. a 50gal metal tank is going to eat up around 500lb of payload when full.

The OP has a 2020 dually with lots of payload.
Many choose to go with a DRW vs. a questionable or borderline SRW set up to eliminate any payload concerns.
Some are OK with cutting it close or trying to precisely match payload. Many have decided to step it up to have more than ample payload so they can add cargo or go to a larger trailer without payload concerns.

And many choose a truck with ample fuel capacity from a factory tank.

Touche`Fish.
I have to agree. The 36 gallons GM gives you is kind of the bare minimum required. I would prefer the larger 45 gallon? tanks Ford provides.
Why can't GM get a small thing like lager fuel capacity right!
If I had 45 gallons to start with I may not have an Aux. tank.
My prior PSD excursion had a 45 gallon tank and life was good.
GM wants to be commercial minded but they are stuck in Joe Consumer mode. They need to think more outside the box or shall I say outside of the tank when it comes to fuel capacity.

An extra 9 gallons would be like pi$$ing in the wind. DW and I are tired of trying to fit our present TT into some of the places we have been and paying sky high prices. We have a 44' momentum on order, so the extra capacity will be nice. Diesel was 4.29 at the North Rim for spring Turkey this year!.
I am looking for a total capacity of 75-100 gallons. On the plus side, this new truck does do better on fuel than my 2011 did.
9 gal larger tank certainly would have made no difference in the buying decision. for the truck or the tank
miltvill
Explorer II
Jun 05, 2020
I am considering a Transfer Flow 40 gal under the rails tank. I want to be able to use my bed cover when I am not towing. I cannot find an OEM replacement for my 2020 GMC which has a 36 gal tank. Plenty of OEM replacement tanks for 2020 Fords but not GM vehicles. I have an 8 foot bed so will not miss the loss of one foot. A larger tank will take up more bed space. I will have more room then a 6.6 foot bed.
One gallon of diesel weighs about 7 gallons.
Lantley
Nomad
Jun 04, 2020
FishOnOne wrote:
Lantley wrote:
valhalla360 wrote:
Don't forget to account for it when considering payload. a 50gal metal tank is going to eat up around 500lb of payload when full.

The OP has a 2020 dually with lots of payload.
Many choose to go with a DRW vs. a questionable or borderline SRW set up to eliminate any payload concerns.
Some are OK with cutting it close or trying to precisely match payload. Many have decided to step it up to have more than ample payload so they can add cargo or go to a larger trailer without payload concerns.

And many choose a truck with ample fuel capacity from a factory tank.

Touche`Fish.
I have to agree. The 36 gallons GM gives you is kind of the bare minimum required. I would prefer the larger 45 gallon? tanks Ford provides.
Why can't GM get a small thing like lager fuel capacity right!
If I had 45 gallons to start with I may not have an Aux. tank.
My prior PSD excursion had a 45 gallon tank and life was good.
GM wants to be commercial minded but they are stuck in Joe Consumer mode. They need to think more outside the box or shall I say outside of the tank when it comes to fuel capacity.
PA12DRVR
Explorer
Jun 04, 2020
Huntindog wrote:
PA12DRVR wrote:
FWIW, the toolbox top was great, but it couldn't hold my tools and "stuff" (lube, air chuck, etc), so I had to carry another container of tools-n-stuff anyway.
Was that due to the volume of tools you carry?

A guy either carries not enough or way too many tools....

I didn't have an unusual volume of tools, but in this discussion by "tools", I meant the tools (couple of crescent wrenches, set of drivers/screwdrivers, a couple of sizes of Channellocks, 5-8 combo wrenches, 5-8 sockets with driver, smaller ball-peen hammer, smaller claw hammer), "lubes" (WD-40, slide lube, a tube of lube for the various camco hose fittings), and "stuff" (4-way tire iron, bottle jack, spare wiper blades, roll of 100mph tape and duct tape, tie wire, bundle of zip ties).....all sounds bigger than it is...The one item that was probably overkill was the heavy duty 1/2 electric drill with socket adaptor: used for the manual feature on my slide-outs if the power extend / retract failed.

I'm certainly not saying don't get a toolbox tank....just that you might still need to have additional space in the truck bed.

...and FWIW, on occasion "tools" included a variety of Brownell's equipment, nocking pliers, serving tool, portable bow press and a never-used-in-the field fletching jig along with a variety of skinning and fleshing knives...which (like most of the tools) didn't get used as often as they could have.

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In bed diesel tanks

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