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"Auxillary" Fuel tank vs installing a new/larger tank

jeffjcalweb
Explorer
Explorer
Hello - I have a 2017 Ram 2500 w/Cummins with the 6'4 bed, and just purchased our first fifth wheel.

I'd like to add fuel capacity for towing and have seen a few threads here with some discussion about transfer cases etc.

I live in CA and first couple places I have called asking about "gravity fed transfer case" said it was "frowned upon in CA - like most emission, tuning, etc for diesels".

So I can put install a 50g auxiliary tank (transferflow TRAX 3) that comes with a nice LCD display and controls with automatic fuel transfer but installed runs close to $2500.

I've also looked at replacing the OEM tank and looks like 52g is about the biggest thing available. That installed is also around $2k.

I don't mind spending the money, I am hesitant to put in the auxiliary tank because of the space it will take up. The truck has a B&W turnover gooseneck bed setup which I plan to use with an Anderson hitch.

I'm also hoping maybe there's something (besides just a few 5g portable cans) that might allow me to not have the tank in the bed when we don't need it (which will certainly be 90% of the time).

Is there another option? And is anyone in CA that has had a gravity fed tank installed (about half the price of the TRAX 3 system)?

Thank you, sorry for the long question.
31 REPLIES 31

Grit_dog
Nomad III
Nomad III
^Like the old 2nd Gen Ram Sports?
Love that colour!
2016 Ram 2500, MotorOps.ca EFIlive tuned, 5โ€ turbo back, 6" lift on 37s
2017 Heartland Torque T29 - Sold.
Couple of Arctic Fox TCs - Sold

Cummins12V98
Explorer III
Explorer III
I think my next truck will be Electric "BLUE"
2015 RAM LongHorn 3500 Dually CrewCab 4X4 CUMMINS/AISIN RearAir 385HP/865TQ 4:10's
37,800# GCVWR "Towing Beast"

"HeavyWeight" B&W RVK3600

2016 MobileSuites 39TKSB3 highly "Elited" In the stable

2007.5 Mobile Suites 36 SB3 29,000# Combined SOLD

Grit_dog
Nomad III
Nomad III
Since the advent of the stupid safety cans, now thereโ€™s good plastic fuel jugs in every color almost.
Those jugs that I used to call race gas jugs are now at all the farm stores in several colors.
Of course theyโ€™re โ€œ notโ€ for โ€œgasolineโ€ wink wink.
But they sure do work great!
2016 Ram 2500, MotorOps.ca EFIlive tuned, 5โ€ turbo back, 6" lift on 37s
2017 Heartland Torque T29 - Sold.
Couple of Arctic Fox TCs - Sold

Me_Again
Explorer II
Explorer II
Huntindog wrote:
Cummins12V98 wrote:
Grit dog wrote:
Thereโ€™s 100 threads about it on here. Reading a few may help your indecision.


Should I post another pic of my 5. :B

It's like sex.... It never gets old:B


Blue text gets/has gotten old!

2021 F150 2.7 Ecoboost - Summer Home 2017 Bighorn 3575el. Can Am Spyder RT-L Chrome, Kawasaki KRX1000. Retired and enjoying it! RIP DW 07-05-2021

Edd505
Explorer
Explorer
80 gallons and it can be moved to any new truck;


Kerosene or water:
2015 F350 FX4 SRW 6.7 Crew, longbed - 2017 Durango Gold 353RKT
2006 F350 SRW 6.0 crew longbed sold
2000 F250 SRW 7.3 extended longbed airbags sold
2001 Western Star 4900EX sold
Jayco Eagle 30.5BHLT sold, Layton 24.5LT sold

Cummins12V98
Explorer III
Explorer III
garyp4951 wrote:
Never seen a blue gas can, only red


I said Blue because Huntingdog posts in โ€œBLUEโ€
2015 RAM LongHorn 3500 Dually CrewCab 4X4 CUMMINS/AISIN RearAir 385HP/865TQ 4:10's
37,800# GCVWR "Towing Beast"

"HeavyWeight" B&W RVK3600

2016 MobileSuites 39TKSB3 highly "Elited" In the stable

2007.5 Mobile Suites 36 SB3 29,000# Combined SOLD

garyp4951
Explorer III
Explorer III
Never seen a blue gas can, only red

Cummins12V98
Explorer III
Explorer III
Huntindog wrote:
Cummins12V98 wrote:
Grit dog wrote:
Thereโ€™s 100 threads about it on here. Reading a few may help your indecision.


Should I post another pic of my 5. :B

It's like sex.... It never gets old:B


I wonder if I can post it with the can BLUE ๐Ÿ˜‰
2015 RAM LongHorn 3500 Dually CrewCab 4X4 CUMMINS/AISIN RearAir 385HP/865TQ 4:10's
37,800# GCVWR "Towing Beast"

"HeavyWeight" B&W RVK3600

2016 MobileSuites 39TKSB3 highly "Elited" In the stable

2007.5 Mobile Suites 36 SB3 29,000# Combined SOLD

Huntindog
Explorer
Explorer
Cummins12V98 wrote:
Grit dog wrote:
Thereโ€™s 100 threads about it on here. Reading a few may help your indecision.


Should I post another pic of my 5. :B

It's like sex.... It never gets old:B
Huntindog
100% boondocking
2021 Grand Design Momentum 398M
2 bathrooms, no waiting
104 gal grey, 104 black,158 fresh
FullBodyPaint, 3,8Kaxles, DiscBrakes
17.5LRH commercial tires
1860watts solar,800 AH Battleborn batterys
2020 Silverado HighCountry CC DA 4X4 DRW

Cummins12V98
Explorer III
Explorer III
Grit dog wrote:
Thereโ€™s 100 threads about it on here. Reading a few may help your indecision.


Should I post another pic of my 5. :B
2015 RAM LongHorn 3500 Dually CrewCab 4X4 CUMMINS/AISIN RearAir 385HP/865TQ 4:10's
37,800# GCVWR "Towing Beast"

"HeavyWeight" B&W RVK3600

2016 MobileSuites 39TKSB3 highly "Elited" In the stable

2007.5 Mobile Suites 36 SB3 29,000# Combined SOLD

BarryG20
Explorer
Explorer
Being able to reset the tank size in ecm is manufacturer dependent. I was told Fords can (at least some years) Ram no and GM cant remember what I was told on them thinking it was no but really cant remember.

I can say on my 17 ram long bed with the Titan 55 gal tank I can go close to 200 mile before it drops below full and when it hits close to E I can put in about 46 gallons so 8 or 9 gallons left in tank.
2016 Jayco 28.5 RLTS

Grit_dog
Nomad III
Nomad III
Lwiddis wrote:
โ€œ"gravity fed transfer case" said it was "frowned upon in CA - like most emission, tuning, etc for diesels"

Arenโ€™t gravity fed axillary tanks illegal in California?


Wouldnโ€™t surprise me. But even if they are โ€œillegalโ€, would that stop you?
Donโ€™t be sheeple.......is todayโ€™s motto.
2016 Ram 2500, MotorOps.ca EFIlive tuned, 5โ€ turbo back, 6" lift on 37s
2017 Heartland Torque T29 - Sold.
Couple of Arctic Fox TCs - Sold

Me_Again
Explorer II
Explorer II
Housted wrote:
I had the 52 gal tank installed over 5 years ago.
It has worked flawlessly and is plenty of capacity.
Current price is $1375 total.
Aero Tanks in San Bernardino -> http://www.aerotanks.com/

Housted


Were they able to reset the tank size in your electronics?
2021 F150 2.7 Ecoboost - Summer Home 2017 Bighorn 3575el. Can Am Spyder RT-L Chrome, Kawasaki KRX1000. Retired and enjoying it! RIP DW 07-05-2021

Housted
Explorer III
Explorer III
I had the 52 gal tank installed over 5 years ago.
It has worked flawlessly and is plenty of capacity.
Current price is $1375 total.
Aero Tanks in San Bernardino -> http://www.aerotanks.com/

Housted
2019 Forrest River Forrester 3051S 2014 Honda CRV toad.
1000 W Solar, converted to 50 amp
400 Amps of LiFePO4,3000 Watt Inverter, Refer converted with JC refrigeration unit, Sofa replaced with 2 swivel chairs, over cab bed converted to TV mount and storage