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Old 11-23-2015, 12:03 PM   #11
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3G Toolboxes

Item # 71212 - 60 Gal tank 56"L x 13"W x 19"H $464.00

Fits with about 6" room to spare between tank and 5th wheel hitch. Matches bed rail height on my short bed 2007 Dodge Ram 2500. Great peace of mind with an extra 60 gal in the bed.

2007 Dodge RAM 2500 5.9L
2010 Wildcat 30-LOFT
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Old 11-23-2015, 01:18 PM   #12
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I have a short bed and put a 26 gal. tank as an extra insurance on long trips out West. I bought one from a Florida Co, and was custom made to fit under my roll cover the cost was a little more then premade, I put the gravity flow system offered by Northern Tool and it works great. I see I'm running low and pull over and turn a ball valve and state looking for a diesel station. I can also lower the level if we're going to stay a few weeks in hot weather so it won't over flow from expansion. I have a lot of room in front and on the sides of my 5th wheel hitch because most of the tank is under the roll cover housing.

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Old 11-23-2015, 02:53 PM   #13
Join Date: Oct 2015
Location: Full-Time
Posts: 104
RDS, gravity fill, 91Gal, tool box top with fill under top cover. Fits nicely in long-bed 3500HD, but this size probably too wide for shorter bed, top is below rails. Has a manually operated ball cut-off valve at tank outlet which is normally kept in open position. No need for transfer pump unless you wish to transfer diesel to off-vehicle tank. When gauge on dash starts dropping, tells me my aux is empty. Do all my filling via aux.
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Old 11-23-2015, 02:53 PM   #14
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Location: Utica, Ky
Posts: 1

Titan makes an under truck 50gal that fits the 250 great. I have had one installed on a xlt 250diesel and a King Ranch 250 diesel. Drop the 26gal and install the 50gal. No need for pumps, transfer etc. The travel computer doesn't totally adapt but its easy to figure the fudge factor.

abought $1900 installed
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Old 11-23-2015, 03:04 PM   #15
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I have an RDS, it is 37 gallons plus the 36 in my truck tank, I have a short bed GMC 3500 and the only bad thing is the cost to fill both tanks......While in Albuquerque NM in 2014 we filled both tanks then went into walmart to stock up prior to going into Canada on our trip to Alaska. Discover thought our card was stolen and cancelled it and sent us a new one back in Fl. I never thought to tell them prior to our trip that we were going on a trip.....So be advised to alert your credit card company. Back then diesel was almost 4 bucks a gallon and almost 6 in Canada...
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Old 11-23-2015, 03:35 PM   #16
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fuel tanks

Here is what I use I drive 2014 Ram Diesel with a 6.5 box
Taylor Wings, Inc. - Big Rig Products - TANKS - Tool Fuel Combo's With Plastic Liners Just enough room to remove hitch. Tank and pump are flush with top of box and also gives you a small storage;
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Old 11-23-2015, 04:35 PM   #17
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Posts: 125
I have a 50 gal RDS tank that sits flush with the bed rails on my 2015 f-250 4x4, it's set up as a gravity feed. Best thing I have added, only 1 fuel stop at the end of the day.
Legacy 38C SR-340
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Old 11-23-2015, 04:57 PM   #18
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Location: Tennessee
Posts: 739
Just added the Titian sidekick, 16 gal over finder well, have to use small elect pump but not a problem. Gives me another 100 miles to find fuel stop.
Roger & Mary Forbes
Little Lady (Dog)
2014 F350 / 2015 CC 36 CKTS
Days Camping 2014-96, 2015-130, 2016-126, 2017-42 and counting
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Old 11-23-2015, 10:12 PM   #19
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I can vouch for transfer flow auxiliary fuel tanks. I have a 75 gallon fuel tank. As previously stated max flow keeps the stock tank at a certain level? My transfer flow keeps my stock tank fuel level between half and 3/4 tank. We took a trip from our home in Kansas to Michigan's upper peninsula without having to stop for fuel. Also as previously stated it does hurt the pocket when you do stop, for me 100 gallons cost about 225.00. But did save me at least 25.00 using my GasBuddy app. Cost of the 75 gallon tank was 1800.00 and 300.00 installation, not cheap.
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Old 11-23-2015, 10:48 PM   #20
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RDS tanks have a very simple gravity feed system. No pump needed. 100% DOT legal in the U.S. as they have check valves that shut the fuel flow off when the main tank is full. I've had mine in 2 trucks now. Trouble free, they make many sizes that will work in your truck. Best prices are on Amazon.

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