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06 chevy aux fuel tank

b-dog
Explorer
Explorer
have been think about getting a aux fuel tank for my 06 chevy duramax. replacement titan tank for under the truck seems a little pricy so I may put one in the bed against the cab. looked at some from northern tool. anyone got any ideas?
16 REPLIES 16

fj12ryder
Explorer III
Explorer III
Peggy bought me a Farm Store tank, and a electric transfer pump and handle from Craigslist. Less than $300 for both. I do have to get out and manually put the fuel filler in the truck tank opening and turn the pump on, but not that big of a deal.

It's only a 40 gallon tank but allows me to pick and choose where I want to stop for a break. I also no longer have to make sure I can get into and out of a fuel station with that 40 foot toy hauler. ๐Ÿ™‚ I fill up at the end of the day when we're unhooked. I wouldn't be without one.
Howard and Peggy

"Don't Panic"

Airstreamer67
Explorer
Explorer
I installed a 91-gallon RDS aluminum tank from Northern Tools a few years ago and love it. I use it not only for refueling the truck on really long trips, but also for refueling a tractor, generator and RTV on the ranch. To get all this done, I installed a 13 gallon-per-minute fuel pump along with filters for extra protection.

It's proven to be a valuable asset to me.

deltabravo
Nomad
Nomad
b-dog wrote:
have been think about getting a aux fuel tank for my 06 chevy duramax. replacement titan tank for under the truck seems a little pricy. looked at some from northern tool. anyone got any ideas?


Titan and Transfer FLow are the only two tanks I'd consider.

I'm not a fan of in bed tanks because they take up my bed space, and create extra wiring and plumbing, and holes in the truck bed if you want to transfer from the aux tank to the main tank while traveling.

I may someday do a Titan replacement tank when I start traveling more.
2009 Silverado 3500HD Dually, D/A, CCLB 4x4 (bought new 8/30/09)
2018 Arctic Fox 992 with an Onan 2500i "quiet" model generator

n0arp
Explorer
Explorer
uncledon wrote:
So apologies to b-dog for highjacking this thread. I have an '02 Silverado dually long bed and am looking at in-bed auxiliary tanks. Pretty much had decided on the RDS 51 gal. fuel/toolbox, or the 60 gal. fuel/toolbox combo. Both are 19" tall according to specs. I measure 19-1/2" to top of side rails. Really want the toolbox option. Have been looking at hard tonneau covers but am undecided as the fuel tank needs to sit 1-1/2" from front bed rail to allow toolbox to open, and don't seem to see any covers that will work and still allow opening of toolbox. Also have fiver hitch in bed. Anybody have recommendations? Thx.


We have a 2015 CCSB and Access Vanish tonneau cover. We initially purchased the 60 gallon thinking we could make it work, but it couldn't be moved over enough not to interfere with the tonneau rails while leaving enough room for the valve and tubing on the other side. The 51 gallon model works fine. The lid doesn't open completely because of the tonneau rolled over it, but it does open sufficiently to get anything in and out of it that we store there. The storage is really quite minimal, being only 6" deep. Still, we use it for a socket set, a spare gallon of DEF, and some other fluids we don't need to access very often.

2000 Country Coach Magna 40',
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2020 Jeep Wrangler Unlimited Rubicon 2.0T, cloaked on 37x13.5s

uncledon
Explorer
Explorer
So apologies to b-dog for highjacking this thread. I have an '02 Silverado dually long bed and am looking at in-bed auxiliary tanks. Pretty much had decided on the RDS 51 gal. fuel/toolbox, or the 60 gal. fuel/toolbox combo. Both are 19" tall according to specs. I measure 19-1/2" to top of side rails. Really want the toolbox option. Have been looking at hard tonneau covers but am undecided as the fuel tank needs to sit 1-1/2" from front bed rail to allow toolbox to open, and don't seem to see any covers that will work and still allow opening of toolbox. Also have fiver hitch in bed. Anybody have recommendations? Thx.
2002 Silverado 3500 DRW CC 6.6L Turbo diesel
2009 Heartland Bighorn 3055RL
2002 Bass Tracker Pro 175 XT w/ 90/65 Merc Jet

lawnspecialties
Explorer
Explorer
LOL! Yep, I have to pee quite often because I'm always sipping a Coke Zero or something. But we stop where we want to stop: rest stops, restaurants, or truck stops.

The auxiliary tank will never pay for itself. Its just something I like having. Our trip to Disney two weeks ago, the tank wasn't even full when we left home and we still didn't have to get fuel until we were almost to Daytona. Then we didn't have to get fuel at all coming home. Fla to NC. Its more of a convenience thing, I guess.

wowens79
Explorer III
Explorer III
Don't y'all ever have to pee, or stretch your legs? I've got a range of about 200 miles which is 3-4 hours. After that long in the seat I'm ready to walk around a bit.

I'm in Georgia so I'm never far from fuel, I know out west it can a long way between fuel stations.
2022 Ford F-350 7.3l
2002 Chevy Silverado 1500HD 6.0l 268k miles (retired)
2016 Heritage Glen 29BH
2003 Flagstaff 228D Pop Up

lawnspecialties
Explorer
Explorer
azdryheat wrote:
I got the 91 gallon RDS fuel tank/tool box combo from Northern Tool. It is gravity fed and works like a charm. Towing my condo around the country, I have a range of over 1,000 miles between fill-ups. It does take up most all of the bed in front of my 5th wheel hitch but I don't carry anything in the bed anyways. It was an easy install.


I have the same tank. Its the second truck I've had an RDS from Northern in. Tool box on top. Love them.

Gravity flow keeps up with demand just fine. Pulling the camper at 72mph, I'm getting around 9 mpg. If I'm thinking this correctly, that means I'm burning though 8 gallons of diesel every hour. Or a gallon every 7.5 minutes. The truck's gauge never drops until the tank runs out.

RDS was offering two models of the 91 gallon tank. One is level to the top of a typical truck bed but extends further into the bed. The other sticks up about 3" above bed height but doesn't take up nearly as much bed space. I have the second one.

azdryheat
Explorer
Explorer
I got the 91 gallon RDS fuel tank/tool box combo from Northern Tool. It is gravity fed and works like a charm. Towing my condo around the country, I have a range of over 1,000 miles between fill-ups. It does take up most all of the bed in front of my 5th wheel hitch but I don't carry anything in the bed anyways. It was an easy install.
2013 Chevy 3500HD CC dually
2014 Voltage 3600 toy hauler
2019 RZR 1000XP TRE

Dave_H_M
Explorer II
Explorer II
I got other things i would rather drop bucks on.

I bought an RDS tank from nationwide wholesalers. It was made in Perry FL to my specs and shipped direct from Perry to my door for less than I could have gotten it from RDS. Go figure. Great folks to work with at nationwide 4 years ago.

i plumbed in myself just about the same as described above.

i "heard" that RDS manufactures the tanks that northern tool markets.

Nicholsfamily05
Explorer
Explorer
We have the transfer flow 50 gallon in our 2016 Ram. Sits in the front of the bed, the bed cover goes right over it when we aren't pulling the 5er. Doesn't get in the way of the hitch. We don't use our truck for anything else except the trailer so our hitch never comes out. But It's all computerized and adds fuel when the system says too. Cost a little more than others but it frees you up from worrying to shut off pump in time or guess how much fuel is left and what not.
We have used transferflow in our last two trucks and love them.
Pay the extra for a price of mind and easy install.
2016 Ram 3500 4x4 Big Horn Crew Cab, SRW. Cummins Turbo Diesel Automatic 68RFE Trans
50 gallon diesel Transfer Flow tank with the Traxx 3 system.
2017 Sierra FLIK 5th Wheel
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ACZL
Explorer
Explorer
Depends on your wants/needs. I like having the whole box avail for the "whatever" I toss in it. Others, like to have lots of fuel and less box avail for the "whatever's". Last and current truck, I replaced stock fuel tanks w/ Transfer-flows replacement tank. As stated, not cheap, few hours of time to replace and doubled fuel capacity w/o sacrificing box "space". If you have a short box, a in-bed tank will DEFINITELY reduce things. Not saying you can't. Many w/ long boxes can add a in-bed tank and still have same amount of room left as short boxes w/o tanks.
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2018 Big Country 3560 SS
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edatlanta
Explorer
Explorer
I have the 52 gallon Titan and it has been working great for the past 9 years. My OEM 26 gallon tank just wasn't getting it done. Expensive, but worth it in my book.
Ed
KM4STL

2006 GMC 2500HD CCSB 4x4 Duramax/Allison, Titan 52 gallon fuel tank, Prodigy Controller, B&W Companion Hitch, Progressive Industries EMS-PT50C, TST Systems 507 TPMS
2010 Jayco Designer 35RLTS,Cummins/Onan RV QG 5500 EVAP
Fulltime since 2010

Halmfamily
Explorer
Explorer
I have a 90 gallon transfer flow. It has a pump and adds fuel to the main tank when the computer tells it to. Not cheap but works great
2008 GMC Sierra 3500 SLT DRW D/A 4x4 (Big All)
2006 Ford F350 PSD SRW King Ranch 4x4 (Henry) (Sold)
B&W Companion, 90 Aux Fuel Tank, Scan Gauge II, Curt f/m hitch, Swagman XC
2015 Forest River Sierra 360 PDEK
DW Diane, DS Michael, FB Draco and Sabian