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 Post subject: Aux tank for 2016 F350
PostPosted: Fri Jan 05, 2018 8:24 pm 
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Joined: Mon Dec 01, 2014 9:29 pm
Posts: 80
Location: Smyrna,TN
OR Year: 2015
OR Model: 3X 349RLS
Member ID: ORF-6030
Thinking about this tank from RDS, thoughts?

https://www.amazon.com/RDS-Auxiliary-Fu ... =rds+72771

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James KQ4M, Virginia KG4JSR, Jackson (terrier mix and king of his castle)
2115 3X 349RLS
2016 Ford F350 4x4 Dually


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PostPosted: Fri Jan 05, 2018 8:35 pm 
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Joined: Wed Dec 14, 2011 11:31 pm
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OR Year: 2015
OR Model: 3x349rls
Member ID: ORF-1024
I know they are more expensive but have you looked at the TransferFlow tanks. Once it is installed it is fully automatic. All you do is fill it with fuel and the controller controls the transfer of fuel from it to the main fuel tank.Dave

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Northern Idaho
2015 3x349
2016 Ram 3500 cummins/aisin trans. 4x4 cclb


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PostPosted: Fri Jan 05, 2018 9:18 pm 
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Joined: Sun Oct 23, 2011 11:16 am
Posts: 6320
Location: Spring/Houston, TX area
OR Year: 2017
OR Model: LF318
Member ID: ORF-0756
I have a 45 gal RDS tank. Not an aux tank but transfer tank. Does the job.

Only hiccup is the Ford bed has rounded corners where the tank sits. The tank square corners sits on these rounded corners, thus raising bottom of the tank off the floor. Had to put blocks of wood to support the bottom. I see some tanks have that corner mired off to accommodate.

Got the RDS filler neck kit to install fuel line. Shopped around got lot better price than others, like Northern Tool.

I installed a Racor filter/water separator filter and a solenoid operated valve under the fender/bed. I chose a 12 volt. .9 amp solenoid with a 3/8” ported inner valve. Noticed I said “ported”, meaning the internal orifice size. Less restrictive flow when gravity feed.

I did add a fuel pump to speed up transfer. In my haste to install, I removed the SOV, put pump in its place. Bad move. Fuel flows thru the pump, unable to control fuel flow from the cab. Reinstall the SOV. Hoped to install both SOV and pump, switch both to transfer. Didn’t do it. Contented with gravity feed.

If put a pump, perhaps best to put above the tank, with pickup tube. Pump sucks fuel, not gravity fed and maybe better control.

I added a ball valve to bypass the SOV in case it fails, fail to open. Bypass valve will allow flow around the SOV, to keep on trucking.

The RDS neck kit comes with 5/16 hoses. I switched to 3/8 size, and used fuel injection hose. Not all hoses alike as fuel hose types, especially with diesel fuel. Improper hose type would mean fuel seepage thru the hose after time. So careful here, use the right hose, material.


Good luck.

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Amy & Mickey Cotham
Retired Oil Field La. Cajun
2017 LF318 Light, w/modifications, TST 510 TPMS
2011 F-250 Diesel, 45 gal Aux Fuel Tank w/transfer SOV


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PostPosted: Fri Jan 05, 2018 10:49 pm 
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Joined: Sat Feb 07, 2015 9:09 pm
Posts: 718
Location: Portland, OR
OR Year: 2015
OR Model: RF316RLS
Member ID: ORF-6313
Nice looking tank. It appears low enough to have a toneau cover close over it.
The price is commonly $450 ($100 less than it is now):
https://camelcamelcamel.com/RDS-Auxiliary-Fuel-Tank-60-Gallon/product/B001HVJKSY

John


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PostPosted: Sat Jan 06, 2018 8:34 am 
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Joined: Tue Mar 24, 2015 3:12 pm
Posts: 35
Location: Virginia - Rappahanock River
OR Year: 2017
OR Model: RF316RLS
Member ID: ORF-6608
The geniuses at Ford put a 26 gallon tank in my 2015 F250 6.7 diesel FWD. Who would do that? The day after I bought it, I went to Performance Diesel for a new tank. I did not want to give up any bed space in the short bed, so I opted to replace the existing tank for a 50 gallon tank with a skid plate that fits in the existing space. No problem and it’s hardly noticeable and does the job. It was not inexpensive and I had them do the work so I’m still getting over the sticker shock. So, for a price I retain bed space and did not have to make any transfere modifications or add handles or pump items.
Just one option.WRD


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PostPosted: Sat Jan 06, 2018 9:13 am 
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Location: Richards, TX
OR Year: 2014
OR Model: 386FLR
Member ID: ORF-6673
http://www.nationwidewholesaledirect.com/catalog/item/6545582/6397822.htm
Maybe save a little...
I use mine to fill my tractor when not on the road. Be sure to use a water separator filter.

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Dave & Beth Edmonston
2014 F350 SRW Super Cab
RDS Model #73956 Aux Tank


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PostPosted: Sat Jan 06, 2018 10:12 am 
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Joined: Sat Feb 08, 2014 1:04 pm
Posts: 416
Location: Middle Missouri
OR Year: 2014
OR Model: OR 349
Member ID: ORF-4500
I also have a RDS aux tank, mine has a tool box which I wanted and 65 gal capacity. It will fit below the sides of a standard bed per Federal law. It was an easy install with the adapter kit and it helps to go further a day than I care to drive before having to fueling while hooked up +/- 1,000 miles.
I didn't see what bed or hitch you are using but if you have a slider make sure of the available space by measuring before ordering the tank and check the tanks dimensions.

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13 F350 cc longbed 6.7
B&W Companion


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PostPosted: Sat Jan 06, 2018 12:25 pm 
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Joined: Thu Jun 30, 2011 3:47 am
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Location: Simi Valley
OR Year: 2014
OR Model: 349RLS
Member ID: ORF-0108
I looked at the same RDS unit #72771 that you're considering, and my only concern was the "open exposure" of the filler cap and fuel gauge, and the possibility of damage, accidental, or otherwise.
I wound up choosing the RDS #72746 (fuel/toolbox combo), which has only a 51 gallon capacity, and it has served me well for the past six years and 75K mies, without any issues.
Good Luck....


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PostPosted: Sat Jan 06, 2018 1:00 pm 
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Joined: Sat Sep 24, 2011 8:26 pm
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Location: Howard County,MD
OR Year: 2012
OR Model: 399BHS
Member ID: ORF-0621
wdosprey wrote:
The geniuses at Ford put a 26 gallon tank in my 2015 F250 6.7 diesel FWD. Who would do that? The day after I bought it, I went to Performance Diesel for a new tank. I did not want to give up any bed space in the short bed, so I opted to replace the existing tank for a 50 gallon tank with a skid plate that fits in the existing space. No problem and it’s hardly noticeable and does the job. It was not inexpensive and I had them do the work so I’m still getting over the sticker shock. So, for a price I retain bed space and did not have to make any transfere modifications or add handles or pump items.
Just one option.WRD

Not just Ford. Very common for short bed trucks to ace small tanks. A 26 gallon tank is a deal breaker for a RV tow vehicle.

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PostPosted: Sat Jan 06, 2018 1:10 pm 
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Posts: 718
Location: Portland, OR
OR Year: 2015
OR Model: RF316RLS
Member ID: ORF-6313
Lantley wrote:
Not just Ford. Very common for short bed trucks to ace small tanks. A 26 gallon tank is a deal breaker for a RV tow vehicle.

100% agree.
I swapped out my 26 gallon OEM tank for a Titan 50g before I ever towed with the truck.
The Titan fit comfortably in the same location as the OEM tank. What was Ford thinking???

John


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PostPosted: Sat Jan 06, 2018 5:30 pm 
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Location: Cleveland GA
OR Year: 2012
OR Model: 391RES
Member ID: ORF-2242
I bought a 45 gal RDS tank and have used the gravity feed but it is SLOW so next summer I plan on making changes will be adding a 12VDC pump to speed up the transfer. I also added an extra fuel filter system which included a water seperator and it is between the main tank and the OEM filter.

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2007.5 Dodge Ram 2500 6.7 Deleted, quad cab SB, EFI Live Tuning, Flo-Pro exhaust, Firestone Air Bags, 16K Pull Rite SuperGlide
OR391RES 2012, Goodyear G614
USN Retired 1971-1996


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PostPosted: Sun Jan 07, 2018 5:27 pm 
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Joined: Mon Dec 01, 2014 9:29 pm
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Location: Smyrna,TN
OR Year: 2015
OR Model: 3X 349RLS
Member ID: ORF-6030
Thanks for all of the replies, they have been of great help in this project. The truck is a long bed so there will be plenty of room between the tank and hitch also have a tonneau cover on it so both will be out of the weather for the most part. thinking of going gravity feed. install of both tank and fuel feed seems to be fairly easy and can change to pump transfer later if needed.

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James KQ4M, Virginia KG4JSR, Jackson (terrier mix and king of his castle)
2115 3X 349RLS
2016 Ford F350 4x4 Dually


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